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e*i
发帖数: 10288 | 2 $10-$10 mail-in rebate
local only
MSI 760GM-P23 (FX) motherboard supports AMD AM3+ multi-core processors with
unique L3 cache and delivers better overclocking capabilities. It features
dual-channel DDR3 memory support and accelerates data transfer rate up to
5200MT/s via HyperTransport 3.0 based system bus. This motherboard also
supports AMD CPUs in the new 32nm manufacturing process.
CPU
• 64bit AMD® FX, Phenom II X6/X4/X3/X2, Athlon II X4/X3/X2 and
Sempron CPU.
Please refer to CPU Su... 阅读全帖 |
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x***u
发帖数: 297 | 3 主要是跑黑群晖，PLEX server, 再加一个VM做其他用。
~$360 including shipping:
Supermicro 12 HDD-Bay 2U Server
Only the 6 left bays are wired to the board
If you want to use the other 6 drive bays, you will have to add a PCI-e Raid
Card
X8DTN+ Motherboard
2x Intel Xeon L5630 2.13ghz 5.86 GT/s 12m Cache CPUs
12x 2gb PC3-10600R Memory
Add Your Own 3.5" SATA Hard Drives
SIMLP-3+ IPMI Remote Access Card
2x 800w Power Supplies
No Rails Included
No Operating System Installed |
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h*****2
发帖数: 2070 | 4 What Intel CPUs support 64GB RAM? I know i7-5820k does. Any i5? Only Haswell
-E cpu supports 64GB ram?
Considering if I should buy one from ebay or build one. I already have case
and PSU. Need MB, CPU and RAMs. Or maybe buy 2 TS140?
Any suggestion? Thanks |
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c********1
发帖数: 5269 | 5 Intel uses the equipment that we(the company I work for) provide to test
their CPUs.The equipment can provide a test site temperature -50C to 150C,
an do auto test.
I do not know the server CPU price is so high.Good to know.
E5 2699V3 has 18 cores. May be you just need one CPU. |
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b**l
发帖数: 374 | 10 对方自己装的，二手机，开价550，觉着小贵，不知道还到多少合适？
i7-3770K CPU @ 3.50GHz (8 CPUs), ~3.5GHz
~AMD Radeon R9 270x
~G.SKILL Ripjaws X Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600
~CORSAIR CX series CX600 600W
~ASRock Z75 Pro3 LGA 1155 Intel Z75 HDMI SATA 6Gb/s (Motherboard)
~One OCZ Vertex 2 2.5" 40GB SATA II MLC Internal SSD (Primary)
~One Seagate Barracuda 7200.11 ST31500341AS 1.5TB 7200 RPM 32MB Cache SATA 3
.0Gb/s 3.5" Internal Hard Drive Bare Drive |
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a******n
发帖数: 100 | 11 local sale:
Two years old
Dual Xeon E5-2630 v2 2.6 GHz CPUs (12 physical cores, 24 virtual cores)
64Gb DDR3-1333 EEC Registered RAM
Nvidia GTX Geforce Titan 6Gb VRAM
250Gb SSD
Blu-Ray burner
ASUS Xonar sound card
Supermicro X9DAi motherboard
No OS included
silent pro gold 1200w
$3000 值吗？ |
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m*****n
发帖数: 3644 | 12 Dual Xeon E5-2630 v2 2.6 GHz CPUs，要3000，也是醉了。这个配置，绝大部分应用
会被dual 5690秒。同是12核，3.46ghz的cpu。去年800元可以买到。现在涨价了。
硬件小白的话，先说说自己主要干啥用。做服务器，并行计算，视频编辑，3d渲染，堆
核，越多越好。否则，也要兼顾频率。如果你有3000的预算，推荐E5-2667 V2，dual。
3.3Ghz的主频，8X2=16核。
再下来，慢20-25%，E5-2680 v1，dual，16核，2.8ghz，1200刀的样子，以后能升级到
2667 V2。这俩方案都是兼顾核心数量和主频的。双路的话，现在好像可以36个核。也
可以配4路，thinkmate.com上有。
板上找人配的话，Thomasz（置顶的帖子）可以干。过一个月，我也可以干。 |
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F***Q
发帖数: 6599 | 13
I rarely had any issue even with my old x200. of course it depends on what
you plan to do with it. for regular stuff, these CPUs are more than
sufficient.
if you feel sluggish, consider adding more memory or use an ssd. |
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F***Q
发帖数: 6599 | 14
I rarely had any issue even with my old x200. of course it depends on what
you plan to do with it. for regular stuff, these CPUs are more than
sufficient.
if you feel sluggish, consider adding more memory or use an ssd. |
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F***Q
发帖数: 6599 | 15
modern CPUs, even at the lower spectrum like i5 or i3 can handle lightweight
matlab calculations pretty well.
however, if you know your program can take a lot of memory or disk, you need
to make sure your motherboard has enough slots to accommodate.
if the computing task is moderate and can be accelerated with more threads,
a low power i7 would work better because it can do hyperthreading (thus,
twice more threads). |
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F***Q
发帖数: 6599 | 16
really depends on your budget, and needs for CPUs and GPUs.
google "supermicro motherboard" if you want something to have 8 PCI-E slots
to host GPUs or Xeon phi for some high throughput tasks (of course, you need
to have the software/algorithm to use them). but be prepared, those
workstations can be noisy. |
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z*********e
发帖数: 10149 | 17 it's not very safe, I broke 2 CPUs with vise. Would never do it again. |
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t*******e
发帖数: 1633 | 18 双通道还是四通道影响很小
My own testing of quad-channel vs. dual-channel indicates it probably made
no difference on the two tests AMD showed. Still, it would probably make
Intel fans feel better if the Broadwell-E CPUs had been configured to
present their best performance.
cinebench测试软件用的是旧版的，那时还Ryzen还没出呢 |
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N**********n
发帖数: 649 | 19 Zen is expected to be utilized in desktop Ryzen CPUs, future Opteron server
processors, and future APUs. |
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发帖数: 1 | 20
不单是优化，现在发现测试也有问题：
http://www.hardware.fr/articles/956-24/retour-smt-mode-high-performance.html
To summarize they noticed that Windows set Ryzen by default to balanced mode
when this mode is enabled, while the X99 plateform is set to the
performance mode even if it set on balanced mode...
So all reviewers did test the Intel CPUs in a mode that get higher perfs,
while Ryzen was granted the balanced mode.. |
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发帖数: 1 | 21
不单是优化，现在发现测试也有问题：
http://www.hardware.fr/articles/956-24/retour-smt-mode-high-performance.html
To summarize they noticed that Windows set Ryzen by default to balanced mode
when this mode is enabled, while the X99 plateform is set to the
performance mode even if it set on balanced mode...
So all reviewers did test the Intel CPUs in a mode that get higher perfs,
while Ryzen was granted the balanced mode.. |
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发帖数: 1 | 22
不单是优化，现在发现测试也有问题：
http://www.hardware.fr/articles/956-24/retour-smt-mode-high-performance.html
To summarize they noticed that Windows set Ryzen by default to balanced mode
when this mode is enabled, while the X99 plateform is set to the
performance mode even if it set on balanced mode...
So all reviewers did test the Intel CPUs in a mode that get higher perfs,
while Ryzen was granted the balanced mode.. |
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发帖数: 1 | 23
不单是优化，现在发现测试也有问题：
http://www.hardware.fr/articles/956-24/retour-smt-mode-high-performance.html
To summarize they noticed that Windows set Ryzen by default to balanced mode
when this mode is enabled, while the X99 plateform is set to the
performance mode even if it set on balanced mode...
So all reviewers did test the Intel CPUs in a mode that get higher perfs,
while Ryzen was granted the balanced mode.. |
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a******8
发帖数: 660 | 24 AM4 socket will be used up to 2020, so at least 3 generations of Ryzen CPUs
use the same socket. |
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n******7
发帖数: 12463 | 25 而且zen核CPU都能用
不像Intel，专门搞了个x99出来
跟普通i7不兼容
CPUs |
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F***Q
发帖数: 6599 | 26
in many cases, you can't upgrade memory, but you can upgrade ssd.
I was able to upgrade the stock ssd (M.2) in my X1 yoga with an EVO 960, it
was noticeably faster.
make sure you have at least 8-16G memory. browsers are memory hogs. I am not
picky at screens, was very happy for both X1 carbon and yoga.
low-end CPUs today are faster than super computers a decade ago.so, yes, of
course. |
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v*******e
发帖数: 11604 | 27 还有这个deal:
This server was retired last week however I found it to be in perfect
conditioning. Windows 7 Dell Optiplex 7010, i5-3570 processor, 8GB DDR3-1600
, with a 500GB SSD with easy access to the motherboard. Comes prepack with
an AMD RADEON HD 7570 GPU. Does not include keyboard mouse or monitor.
https://washingtondc.craigslist.org/mld/sys/6126864339.html
500GB SSD都值$125了吧。我也想过买这个，但是缺点有：低机箱，将来我如果想升级
电源、显卡，是个问题；8GB内存小了点；windows7不如10。现在没有免费升级了，装
软件烦啊。
现在CPU速度死活提高不上来，这些旧电脑还是很好用的吧。我查i5 4590 vs ... 阅读全帖 |
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A***n
发帖数: 8859 | 28 I have a cluster 160 CPUS 8 nodes, and an old station.
Just need a laptop for travel.
a
backpack |
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发帖数: 1 | 30
Intel's is probably 20 core on a monolithic die but they anticipates low
yield so no 20 core will be selling initially. Threadripper is using the
lego approach to put 2 ryzens on a interposer.
Performance = freq x IPC x number of cores x scaling coefficent
Looks like intel will lower the base clock speed of high core CPUs. AMD will
do the same but probably to a less degree. We will need to wait until they
come out to know the performance.
Price wise, i9 is WalletRipper |
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发帖数: 1 | 32
有人是这么解析：
https://www.extremetech.com/computing/253416-amd-explains-threadripper-cpus-
four-die-hood
"Even so, der8auer’s findings left us a touch confused. What the delid
showed was that AMD had put four dies on the package, but only two of them
were apparently active, as opposed to using four cores across each die for a
total of 16. We’ve since spoken to AMD about this, as has Overclock3D, and
we can explain what’s actually going on.
The explanation is straightforward: The reason Threadripper ... 阅读全帖 |
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F***Q
发帖数: 6599 | 34
sounds like an operating system issue.
on the other hand, try to install a Linux (xubuntu for example) or windows
xp on the old laptops, you will be amazed how fast those old CPUs can be.
my old x61 runs happily with a xubuntu and an SSD upgrade. |
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k****n
发帖数: 52 | 35 【 以下文字转载自 EmergingNetworking 讨论区 】
发信人: ketten (ketten), 信区: EmergingNetworking
标 题: HELP: VPN Firewall/Router/Switch
发信站: BBS 未名空间站 (Thu Feb 26 12:37:19 2009)
Any recommendation on a VPN firewall/router/switch at a budget < $500? It is
for setting up a small private network at work.
I have read some comments from the web complaining that the throughput of
VPN router within this budget range is too low due to underpowered CPUs.
Ideally, I am looking for a model: easy to setup and with a reasona |
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M*********r
发帖数: 70 | 36
我的程序建立很多线程通向一个服务器，这些线程分别从服务器下载。当线程达到5000时
Unless you run a large-scale application in a mainframe with 5000 CPUs, I dont
see any reason to spawn 5000 threads. The overhead of thread context switching
alone will make your design look silly. If you deal with I/O related problems,
I suggest you take a look at NIO introduced in JDK1.4. Specifically using
selector is far better a choice to deal with I/O multiplexing than forking
thread. Check out the following article:
http://www.onjava.com/pub/a/on |
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g*****g
发帖数: 34805 | 37 3. When you have multiple CPUs, multi-threading is supposed to
be faster. I would use a CountDownLatch to conclude the sum.
Leave the number of threads configurable. |
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r*****l
发帖数: 2859 | 38 If the C++ code can effectively utilize the CPU, no additional multi-thread
thing you need to do in Java. Otherwise, either C++ team needs to create
more efficient code or they will lose their jobs.
In your scenario, I guess the CPUs are already fully utilized. |
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w****g
发帖数: 597 | 39 http://www.pcpro.co.uk/news/351802/intel-plans-to-challenge-android-with-moblin-for-mids
Intel To Challenge Android With Moblin For Mobile Devices
Intel has officially entered the smartphone fight, giving a bullish
demonstration at IDF of an Atom-based phone running the latest incarnation
of its mobile Linux-based OS, dubbed Moblin for MIDs (mobile internet
devices) v2.1. The system isn't aimed at current Atom CPUs, though — they'
re too power-hungry. 'One of the drivers of this initiative, and |
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w****g
发帖数: 597 | 40 Qt is a cross-platform application and UI framework.
QEMU is a machine emulator that supports a wide range of CPUs, so you can
run PowerPC software on an x86 computer, x86-64 software on an SPARC
computer, or what have you. |
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b*****l
发帖数: 9499 | 42 另外，怀疑是不是显卡驱动或者 xorg.conf 的问题
$lspci | grep VGA 的结果是
0a:03.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200eW WPCM450
(rev 0a)
/etc/X11/xorg.conf 是用 Xorg -configure 生成的。。。
/var/log/gdm3/:0-greeter.log 的内容是：
gnome-session[28930]: atk-bridge-WARNING: AT_SPI_REGISTRY was not started at
session startup.
gnome-session[28930]: atk-bridge-WARNING: IOR not set.
gnome-session[28930]: atk-bridge-WARNING: Could not locate registry
** (:28938): DEBUG: Client registered with session manage... 阅读全帖 |
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l******9
发帖数: 579 | 43 I am also thinking about openMP.
But, how to make sure that openMP take full use of available
cores ?
Suppose that I have 24 CPUs, each of them has 6 cores (each core
supports hyperthreading).
I have 10,000 computing tasks, each of them needs 0.001 second.
Some of the tasks need to exchange data, which is very small.
Which task needs to send/receive data to/from which task is pre-defined. It
is known before the program in run.
But, the exchange frequency may be very high.
I want to schedule task... 阅读全帖 |
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v*******a
发帖数: 14 | 44 1）How would you determine if apache is currently running on a debian linux
box?
2)How would you determine how many physical CPUs are installed on a debian
linux box?
谢谢！ |
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b****o
发帖数: 387 | 45 I have a 12 physical core, 24 virtual cores.
If I start a job with 24 process reading the same file (small file 100MB),
will this be problematic? I found the cpus are basically 0.5% for loading;
I do not know why this was triggered. |
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c*****l
发帖数: 297 | 46 实验室要配置一个这样的机器，老板要去问问版里的高手。如果服务器采购成功，会在
本版招admin.
128 cpus: intel X5650 six core (12 threads)
Memory: 128*12* 8GB (保证每个线程有8GB内存)
请推荐主板 和server RACK
请问硬件大概要多少钱？
这样的话大概是能同时运行1028个
OS : DEBIAN LINUX
Job Scheduler: qsub (free) |
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y**b
发帖数: 10166 | 47 请问一般用什么通用的方法和工具？
有几个问题请教：
（1）PAPI_MEM_SCY(Cycles Stalled Waiting for Memory Access,好处是可以嵌在代
码里面，尤其适合并行计算)似乎不支持sandybridge/ivybridge/haswell几种处理器，
是不是意味着基于PAPI的TAU,PerfSuite,HPCToolkit也没法做这种测试？
（2）用perf进行了测试，结果如下
perf stat -p 48382 sleep 10
Performance counter stats for process id '48382':
4821.604141 task-clock (msec) # 0.963 CPUs utilized
[100.00%]
1,218 context-switches # 0.253 K/sec
[100.00%]
0 ... 阅读全帖 |
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