o**o
发帖数: 3964 | 1 很多CPU实际上可用registered。成功了发包子吧。 |
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F******k
发帖数: 7375 | 2 CPU是Intel Core i3-4150 3.5Ghz，机器是lenovo ts140，google一下没看到有讨论的
，哪儿能查到这个信息吗？谢谢 |
|
|
o**o
发帖数: 3964 | 4 Unfortunately not supported by this board |
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F******k
发帖数: 7375 | 5 Gen4 i3 supports ECC as per spec from intel. |
|
|
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t*******e
发帖数: 1633 | 8 肯定是联想跟着intel写错了，我不信i3能支持ecc |
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p***o
发帖数: 1252 | 9 奔腾都能上ECC, i5和i7的ecc支持被阉割了而已。 |
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a***e
发帖数: 27968 | 10 R won't fly on consumer board.
ECC unbuffered might work.
dice
★ 发自iPhone App: ChineseWeb 13 |
|
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t****t
发帖数: 6806 | 12 usually, all streams are block buffered, unless:
if it is stderr, it's unbuffered
if it is not stderr, and refers to a terminal, it is line buffered.
you may change the behaviour by using setbuf(). |
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j******o
发帖数: 4219 | 13 没有参数的话，用系统默认的buffer大小。
The optional buffering argument specifies the file’s desired buffer size: 0
means unbuffered, 1 means line buffered, any other positive value means use
a buffer of (approximately) that size. A negative buffering means to use
the system default, which is usually line buffered for tty devices and fully
buffered for other files. If omitted, the system default is used. |
|
j******o
发帖数: 4219 | 14 没有参数的话，用系统默认的buffer大小。
The optional buffering argument specifies the file’s desired buffer size: 0
means unbuffered, 1 means line buffered, any other positive value means use
a buffer of (approximately) that size. A negative buffering means to use
the system default, which is usually line buffered for tty devices and fully
buffered for other files. If omitted, the system default is used. |
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x******a
发帖数: 6336 | 15 I got thousands problems on the following piece of code "dumpfile.h" when I
compile under cygwin. it is ok under visual stduio... can anyone help?
Thanks!
#include
#include
#include //ostream_iterator
#include //cerr
#include //std::copy
template
void dump_to_file(const char* filename, const std::vector& v_d){
std::ofstream ofs(filename);
if(!ofs){
std::cerr<<"Unable to open the file to write!n";
return ;... 阅读全帖 |
|
发帖数: 1 | 16 cpp有很多魔法可以提高性能，golang基本不行，java和golang一個檔次。
我的意思是多路多核服務器，cpp可以比java和golang快很多，根本不是這篇知乎裡面
cpp僅僅比golang快一點的結論。
If local disk: unbuffered IO, SPDK, memory-mapped file
If remote disk: RDMA, DPDK
If using accelerator: TCAM, hardware regex engine, FPGA memory comparison
If not using accelerator: x86 SSE STTNI and AVX
cpp能把golang打出屎來 |
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t******q
发帖数: 117 | 17 It is belived that the buffered I/O are more effiecent than
the direct unbuffered i/o, since os will schedule the filebuffer -> user
buffer
transfer.
usually, you need to call fflush to make sure the fwrite out the
data from filebuffer to disk. since the schedule thing, it is not
safe to assume the data is out unless you force it write out.
if you fprintf to stdios, sometime you have to fflush the file pointer
to see the output. Maybe that is the reason.
read the FILE structure.
request,
reque |
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B*******e
发帖数: 3882 | 18 xp 下面情况如何?
有超频的话, 先降到正常
你的电源看起来不怎么强劲
那个 vista 的 Intel INF Drivers 装了没有(msi website).
另外 msi 网站上看到:
"Main Memory
? Supports 4 unbuffered DIMM of 1.8 Volt DDR2 SDRAM
? Supports up to 8GB memory size (with DDR2 800, memory only up to 4GB)
? Support Dual Channel DDR2 533/677/800MHz and up
Due to the High Performance Memory design, motherboards or system config
urations may or may not operate smoothly at the JEDEC (Joint Electron Device
Engineering Council) standard settings (BIOS Default on |
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w*******y
发帖数: 60932 | 19 Patriot 2GB 200-Pin DDR2 SO-DIMM DDR2 667 (PC2 5300) Laptop Memory Model
PSD22G6672S
Newegg $35.99 (after $10.00 Mail-In Rebate):
http://www.newegg.com/Product/Product.aspx?Item=N82E16820220229
PC2-5300 (667MHz) Data Rate
200-Pin Dual in-line memory module
Non-ECC Unbuffered
2 Rank Double-sided module
7.8US Refresh Interval (8192 CYCLES/64MS)
1.8V Power Requirement
Auto and self refresh capability
PCB height: 1181 (mil)
Serial Presence-Detect (SPD)
100% Tested
Lifetime Warranty
RoHS Compliant
I |
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w*******y
发帖数: 60932 | 20 Corsair 4 GB DDR3 Laptop Memory Kit CMSO4GX3M2A1333C9 for $76.46 shipped on
Amazon
4GB (2 X 2GB) DDR3 Laptop Memory Kit - 1333MHz Unbuffered CL 9 SODIMM Memory
9-9-9-24 1.5V
Link:
http://www.amazon.com/Corsair-DDR3-Laptop-Memory-CMSO4GX3M2A1333C9/dp/B002YUBVES/
It has been posted at higher price before. I think that it's good price as
other 4GB DDR3 SODIMM kits usually go for around $100. It seems that this
kit works fine for Macbook Pro according to some posts.
|
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w*******y
发帖数: 60932 | 21 $89.99 with Free Shipping. Tax in NJ i do not know where else
Ends 7/29
coupon: EMCYVNP52
Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231277
Brand G.SKILL
Series Ripjaws Series
Model F3-12800CL9D-4GBRL
Type 240-Pin DDR3 SDRAM
Tech Spec
Capacity 4GB (2 x 2GB)
Speed DDR3 1600 (PC3 12800)
Cas Latency 9
Timing 9-9-9-24-2N
Voltage 1.5V
ECC No
Buffered/Registered Unbuffered
Multi-channel Kit Dual Channel Kit
Heat Spreader Yes
Features
C |
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w*******y
发帖数: 60932 | 22 J&R has these Link:
http://www.jr.com/crucial/pe/CRT_4GK2564BA13/
for 74.99 after $10 instant rebate. Wonder how good these modules are.
240-pin DIMM / DDR3 PC3-10600 / CL=9 / Unbuffered / NON-ECC / DDR3-1333 / 1.
5V / 256Meg x 64
Crucial 240-pin DIMMs are used in DDR3 Memory for Desktop computers. DDR3 is
the latest generation of memory with an improved Architecture that allows
it to transmit Data more quickly. A dual inline memory module (DIMM)
consists of a number of memory components (usuall |
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w*******y
发帖数: 60932 | 23 mwave has AVEXIR AVD3U13330902G-2S Standard 4GB kit (2GB x 2) dual channel
240-pin pc3-10600 DDR3 1333mhz:
http://www.mwave.com/mwave/skusearch_v3.asp?scriteria=BA42027
for $60 + FS for mclub members (Free to join)
If you have a review coupon, or get one in time, use it to get the set for $
55 + FS
Technical Information:
Model: AVD3U13330902G-2S
Capacity Size: 2GBx2
Frequency bandwidth: PC3 10600 10.6GB/Sec (DDR3-1333 MHz) CL9
Suitable for: for desktop PC DDR3 Unbuffered DIMM
Module Specificat |
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w*******y
发帖数: 60932 | 24 Newegg has the below 4GB DDR3 laptop memory:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820220476
for $69.99 after $20 MIR with $0.99 shipping.
Patriot Signature 4GB 204-Pin DDR3 SO-DIMM DDR3 1333 (PC3 10600) Laptop
Memory Model PSD34G13332S
Capacity 4GB
Speed DDR3 1333 (PC3 10600)
Cas Latency 9
Voltage 1.5V
ECC No
Buffered/Registered Unbuffered
Features
2 Rank Double-sided module
7.8US Refresh Interval (8192 CYCLES/64MS)
Auto and self |
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w*******y
发帖数: 60932 | 25 mwave has AVEXIR AVD2U0800050 2G-1B Budget 2GB 2048MB 240-pin pc2-6400 DDR2
800mhz DIMM 5-5-5-18 desktop memory module:
http://www.mwave.com/mwave/skusearch_v3.asp?scriteria=BA42019&pagetitle=AVEXIR AVD2U08000502G-1B Budget 2GB 2048MB 240-pin pc2-
for $26.99 + FS for mclub members (free to join)
If you have a $5 review coupon get the deal for $22 + FS
Technical Information:
800MHz DDR2
SPD Programmed at 5-5-5-18 (CAS-TRCD-TRP-TRAS)
Available in 2GB (1x2048MB) Single Channel
Unbuffered
Avexir ... 阅读全帖 |
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w*******y
发帖数: 60932 | 26 mwave has AVEXIR AVD2U0800050 2G-2BW Budget 4GB kit (2GB x 2) dual channel
240-pin pc2-6400 DDR2 800mhz:
http://www.mwave.com/mwave/skusearch_v3.asp?scriteria=BA42020&pagetitle=AVEXIR AVD2U08000502G-2BW Budget 4GB kit (2GB x 2) dual
for $50 + FS for mclub members (free to join)
Technical Information:
800MHz DDR2
SPD Programmed at 5-5-5-18 (CAS-TRCD-TRP-TRAS)
Available in 2GB (2x2048MB) Single Channel
Unbuffered
Avexir Lifetime Warranty
1.8V
240 Pin DIMM
|
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w*******y
发帖数: 60932 | 27 Gonna be hard to resist this one folks. Great set of ram with no rebate.
Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231277
G.SKILL
Series
Ripjaws Series
Model
F3-12800CL9D-4GBRL
Type
240-Pin DDR3 SDRAM
Capacity
4GB (2 x 2GB)
Speed
DDR3 1600 (PC3 12800)
Cas Latency
9
Timing
9-9-9-24-2N
Voltage
1.5V
ECC
No
Buffered/Registered
Unbuffered
Multi-channel Kit
Dual Channel Kit
Heat Spreader
Yes
Features
Compatible with Dual Chan... 阅读全帖 |
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w*******y
发帖数: 60932 | 30 Avexir AVD3U13330902G-1SW Standard Series 2GB 240-pin PC3-10600 DDR3 1333mhz
9-9-9-24 DIMM desktop memory module
$17 with free shipping
Link:
http://www.mwave.com/mwave/SKUSearch_v3.asp?px=DS&scriteria=BA4 AVD3U13330902G-1SW Standard Series 2GB 240-pin PC3-10600 DDR3 1333mhz 9-9-9-24 DIMM desktop memory module
Rated 5 out of 5 stars.
Technical Information:
# 1333MHz DDR3
# SPD Programmed at 9-9-9-24 (CAS-TRCD-TRP-TRAS)
# Available in 2GB (1x2048MB) Triple Channel
# Unbuffered
# Avexir Lifetime W... 阅读全帖 |
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w*******y
发帖数: 60932 | 32 found this on a post on [H], credits to computerpro3
$9.99 OCZ Value Series 2GB DDR3 directron
Link:
http://www.directron.com/ocz3v10662g.html
quote
* Model: OCZ3V10662G
* Module Size: 2GB
* Package: 240-pin DIMM
* Speed: DDR3 1066 PC3-8500
* CL: CL7
* DIMM Type: Unbuffered
* Voltage: 1.7V |
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w*******y
发帖数: 60932 | 33 CORSAIR DDR2 2GB PC2-6400:
http://www.frys.com/product/5917194
, 800MHz, non-ECC, 240-Pin, Unbuffered CL5 SINGLE Module, $14.99 after $20
rebate. $1.99 shipping, or free pickup at store.
rebate info:
http://images.frys.com/art/rebates_pdf/Corsair_37957.pdf
valid from 2011-04-15 to 2011-04-21
* Density: 2GB (1x2GB Module)
* Speed: 800MHz
* Timing: 5-5-5-18
* Type: DDR2
* Format: DIMM
* Pin Out: 240 Pin
* Voltage: 1.8V
* Part#: VS2GB800D2 G
* UPC#: 843591004534... 阅读全帖 |
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w*******y
发帖数: 60932 | 34 G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3
12800) Desktop Memory Model F3-12800CL9D-8GBXL:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231428
code EMCKFHJ22 gets you 25% off / exp 4/24/11
Cas Latency:
9
Voltage:
1.5V
Multi-channel Kit:
Dual Channel Kit
Timing:
9-9-9-24
ECC:
No
Buffered/Registered:
Unbuffered
Features:
Designed Specifically for Intel Sandy Bridge CPUs and P67 Platforms
Parts:
Lifetime limited
|
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w*******y
发帖数: 60932 | 35 Newegg currently have the G.SKILL Sniper 8GB (2 x 4GB) 240-Pin DDR3 SDRAM
DDR3 1600 (PC3 12800) Desktop Memory Model
F3-12800CL9D-8GBSR for $74.99 (99.99 - 25)
$25 off w/ promo code EMCKEJG73
+ Free Gift: Patriot X-Porter 2GB Flash Drive (USB2.0 Portable) Model
PSF2GUSB (value:$5.99)
NO Rebates!
Brand: G.SKILL
Series: RipJaws
Model: F3-12800CL9D-8GBRL
Type: 240-Pin DDR3 SDRAM
Capacity: 8GB (2 x 4GB)
Speed: DDR3 1600 (PC3 12800)
Cas Latency: 9
Timing: 9-9-9-24-2N
Voltage: 1.5V
ECC: No
Buffered/Re... 阅读全帖 |
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w*******y
发帖数: 60932 | 36 Searched and didn't find...
$44.99 - $25 MIR + $2.29 S/H = $22.28
Link:
http://www.tigerdirect.com/applications/SearchTools/item-detail
Specifications
Patriot Signature PC10600 4GB DDR3 Memory Upgrade
Memory Category: Desktop
Memory Type: DDR3
Memory Speed: PC10600
Memory Speed MHz: 1333MHz
Memory Size: 4096MB
Total Memory Size: 4GB
Memory Modules: 1
Memory Channels: Single
Memory Socket: DIMM
Memory CAS Latency: 9
Pins: ... 阅读全帖 |
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w*******y
发帖数: 60932 | 37 Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231460
Use code: BTEKEHG34 .
You *might* have to subscribe to their newsletters. Free USB drive will
autmatically be added to your cart. It's a "Patriot X-Porter 2GB Flash Drive
(USB2.0 Portable) Model PSF2GUSB".
Specs:
G.SKILL
Series
Sniper Series
Model
F3-14900CL9D-8GBSR
Type
240-Pin DDR3 SDRAM
Tech Spec
Capacity
8GB (2 x 4GB)
Speed
DDR3 1866 (PC3 14900)
Cas Latency
9
Timing
9-10-9-28
Voltage
1.5... 阅读全帖 |
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w*******y
发帖数: 60932 | 38 CORSAIR DDR2 2GB PC2-6400:
http://www.frys.com/product/5917194
, 800MHz, non-ECC, 240-Pin, Unbuffered CL5 SINGLE Module, $14.99 after $20
rebate. $1.99 shipping, or free pickup at store.
rebate info:
http://images.frys.com/art/rebates_pdf/Corsair_38472.pdf
valid from 2011-05-20 to 2011-05-26
* Density: 2GB (1x2GB Module)
* Speed: 800MHz
* Timing: 5-5-5-18
* Type: DDR2
* Format: DIMM
* Pin Out: 240 Pin
* Voltage: 1.8V
* Part#: VS2GB800D2 G
* UPC#: 843591004534
* Warranty: Limited Lifetime
|
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w*******y
发帖数: 60932 | 39 Was out of stock online, NOW BACK IN STOCK
TODAY IS LAST DAY TO QUALIFY FOR REBATE
original post
Fry's has CORSAIR DDR2 2GB PC2-6400:
http://www.frys.com/product/5917194
, 800MHz, non-ECC, 240-Pin, Unbuffered CL5 SINGLE Module, $9.99 after $25
rebate. $1.99 shipping, or free pickup at store.
Rebate link:
http://images.frys.com/art/rebates_pdf/38857_Corsair.pdf
valid from 2011-06-10 to 2011-06-16
* Density: 2GB (1x2GB Module)
* Speed: 800MHz
* Timing: 5-5-5-18
* Type: DDR2
* Format: DIMM
* Pin Ou... 阅读全帖 |
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w*******y
发帖数: 60932 | 40 Fry.com has CORSAIR DDR2 2GB PC2-6400:
http://www.frys.com/product/5917194
, 800MHz, non-ECC, 240-Pin, Unbuffered CL5 SINGLE Module, $9.99 after $25
rebate:
http://images.frys.com/art/rebates_pdf/Corsair_38935.pdf
. $1.99 shipping, or free pickup at store.
rebate valid from 2011-06-17 to 2011-06-23 (LAST DAY TODAY)
* Density: 2GB (1x2GB Module)
* Speed: 800MHz
* Timing: 5-5-5-18
* Type: DDR2
* Format: DIMM
* Pin Out: 240 Pin
* Voltage: 1.8V
* Part#: VS2GB800D2 G
* UPC#: 843591004534
* Warranty: ... 阅读全帖 |
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w*******y
发帖数: 60932 | 41 Directron has the Corsair Dominator 8gb (2x4gb) DDR3 RAM set on sale for $88
.99 with an additional $35 off, making it $53.99 with free shipping. Seems
to be $100+ everywhere else.
Coupon: hard62911
Link:
http://www.directron.com/p8gx3m2b1333c9.html?hardocp=1
Specs:
* Part Number: CMP8GX3M2B1333C9
* Size: 8 GB (2 x 4 GB)
* Memory Technology: DDR3 SDRAM
* Memory Speed: 1333 MHz
* Memory Standard: DDR3-1333/PC3-10666
* Error Checking: Non-ECC
* Signal Processing: Unbuf... 阅读全帖 |
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w*******y
发帖数: 60932 | 42 G.SKILL 8GB (2 x 4GB) 204-Pin DDR3 SO-DIMM DDR3 1333 (PC3 10600) Laptop
Memory
Cheapest price to date. Last time it went FP @ $55.
Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231342
Cas Latency:9
Timing:-9-9-24
Voltage:1.5V
ECC:No
Buffered/Registered: Unbuffered
Multi-channel Kit: Dual Channel Kit
Parts: Lifetime limited
Labor: Lifetime limited
|
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w*******y
发帖数: 60932 | 43 Corsair XMS3 4GB PC12800 DDR3 RAM: $45.98
$40 rebate (2x$20):
http://static.highspeedbackbone.net/rebates/COR-10499 US.pdf
Memory Category: Desktop
Memory Type: DDR3
Memory Speed: PC12800
Memory Speed MHz: 1600MHz
Memory Size: 4096MB
Total Memory Size: 4GB
Memory Modules: 1
Memory Channels: Dual
Memory Socket: DIMM
Memory CAS Latency: 9
Memory Timing: 9-9-9-24
Pins: 240
Voltage: 1.5V
ECC: No
Memory Buffer: Unbuffered
|
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w*******y
发帖数: 60932 | 45 Again, Frys.com has CORSAIR DDR2 2GB PC2-6400:
http://www.frys.com/product/5917194
, 800MHz, non-ECC, 240-Pin, Unbuffered CL5 SINGLE Module, $9.99 after $25
rebate:
http://images.frys.com/art/rebates_pdf/Corsair_39455.pdf
. $1.99 shipping, or free pickup at store.
rebate valid from 2011-07-22 to 2011-07-28
* Density: 2GB (1x2GB Module)
* Speed: 800MHz
* Timing: 5-5-5-18
* Type: DDR2
* Format: DIMM
* Pin Out: 240 Pin
* Voltage: 1.8V
* Part#: VS2GB800D2 G
* UPC#: 843591004534
* Warranty: Limited L... 阅读全帖 |
|
w*******y
发帖数: 60932 | 46 ASRock P67 EXTREME4 B3 LGA1155/ Intel P67 B3/ DDR3/ Quad SLI & Quad
CrossFireX/ SATA3&USB3.0/ A&GbE/ ATX Motherboard
coupon code: SIZZLE - Expires 9/19
Product Info:
SpecificationsMfr Part Number: P67 EXTREME4 B3
CPU: Socket 1155 Support 2nd Generation Intel Core i7/ i5/ i3
processors, Supports Intel Turbo Boost 2.0 Technology; Supports Intel K-
Series unlocked CPU; Supports Hyper-Threading Technology
Chipset: Intel P67 B3
Memory: 4x 240pin DDR3-2133(OC)/1866(OC)/16... 阅读全帖 |
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w*******y
发帖数: 60932 | 47 Fry's in store only.
Link:
http://www.frys.com/product/6544733
PC3-12800 (1600MHz) Data Rate
204-Pin Dual in-line memory module
Non-ECC Unbuffered
2 Rank Double-sided module
7.8US Refresh Interval (8192 CYCLES/64MS)
1.5V Power Requirement
Auto and self refresh capability
PCB height: 1181(mil)
Serial Presence-Detect (SPD)
100% Tested
RoHS Compliant
JEDEC Compliant
|
|
w*******y
发帖数: 60932 | 48 Didn't see it posted except from last week when this set was $30 AR on Buy.
com.
$57.99 - 40 rebate:
http://images.frys.com/art/rebates_pdf/Kingson_21594f.pdf
+ 2 shipping = $19.99
Orders shipped to AZ, CA, GA, IN, IL, TN, TX , OH, NV, and WA are subject to
state and local sales tax, as applicable.
Linky:
http://www.frys.com/product/6193699
******************** ******************** ******************** **********
********** ******************** ******************** ********************
... 阅读全帖 |
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w*******y
发帖数: 60932 | 50 Crucial CT2KIT51264BC1339 8GB Kit DDR3 1333 SO-DIMM Notebook Memory $29.99
FS
JR.com:
http://www.jr.com/crucial/pe/CRT_2K51264BC13/
SpecificationsCapacity: 8GB (2 x 4GB)
Speed: DDR3 1333 (PC3 10600)
Cas Latency: 9
Voltage: 1.5V
ECC: No
Buffered/Registered: Unbuffered
Multi-channel Kit: Dual Channel Kit
|
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