购买服务器的适配和性价比咨询（主用MD，偶尔QM/MM）

sun877469558

abin 发表于 2025-7-13 13:30
是哪位专家说的，
AMD 9654满载可以3.55GHz？

http://sobereva.com/444

出自sob老师的5 顶级双路服务器推荐配置

sun877469558

David_R 发表于 2025-7-13 14:32
This motherboard has 4 PCI-e slots, but you can only fit single-slot devices side-by-side in them. ...

Thank you for your reply.

sun877469558

tonganlhy 发表于 2025-7-13 11:27
如果你要在这个配置上加两个及以上显卡，建议还是找商家配准系统吧。
这个配置加显卡的几个问题：
1.机 ...

请您过目一下，这个可以么？

tonganlhy

sun877469558 发表于 2025-7-13 19:05
请您过目一下，这个可以么？

机箱太小，放不小两个显卡，要换大一点的。电源看看有没有2500W及以上的。cpu和显卡的tdp已经1600W，2000W的电源压不太住，牌子也换个好一点的，比如长城、振华等等。4090可以考虑用涡轮卡抽风。商家的维保要谈好。

abin

sun877469558 发表于 2025-7-13 19:02
http://sobereva.com/444

出自sob老师的5 顶级双路服务器推荐配置

我先后经手过8台 9654双路服务器,
不同批次处理器,
不同批次/不同品牌主板,

运行cp2k/vasp, 未观测到满负荷情况下, CPU核心可以持续3.55GHz稳定工作; 会在2.7 GHz到3.7 GHz之间来回跳动.

ADM自己写的技术术语是: All Core Boost Speed, 通俗理解为,瞬时(短时间)频率峰值可达....

David_R

alanmei 发表于 2025-7-13 15:38
The frequency depends on the software. For different instructions, the same frequency CPU requires ...

Ah, yes, that is an important consideration. Actually I haven't used the 9654 system for any AVX512 workloads, so I hadn't had direct experience with that.

David_R

tonganlhy 发表于 2025-7-14 09:33
机箱太小，放不小两个显卡，要换大一点的。电源看看有没有2500W及以上的。cpu和显卡的tdp已经1600W，2000 ...

I agree with the suggestion to use turbo cards - they are loud but much smaller, taking up only two expansion card slots. Many of the RTX4090 cards take up more than 3 slots, which makes it very difficult to fit more than one of them in a case (or on the MZ73-LM1 board).

I would have thought a 2000W power supply would be enough, provided it is good quality. A titanium-rated 1600W PSU can handle a CPU at 850W and a single 4090 without problems.

I also note that I've actually never come across a workload that requires all 450W power draw on the 4090 - that includes 3D rendering in Blender, training/inferencing ML models (including LLMs), MD (GROMACS and OpenMM), and even the GPU stress test gpu_burn. I've only ever seen a maximum of about 350W on Ubuntu.

科学计算

sun877469558 发表于 2025-7-13 19:05
请您过目一下，这个可以么？

这个配置不是专业的厂商配置的，一看就是拼凑出来的。长期稳定使用，建议找专业的服务商，他们的平台配置稳定可靠。