3 ms·

I have my old Intel® Core™ i7-5820K desktop with 32GB ram and a vega 54 running ubuntu and it's my main driver when working from home. Still does pretty much ev

I have my old Intel® Core™ i7-5820K desktop with 32GB ram and a vega 54 running ubuntu and it's my main driver when working from home. Still does pretty much everything I need.

paulmd 5y ago
X99 is a great "tinkerers" platform before stuff really got locked down. You've got tons of PCIe, quad-channel RAM, dirt-cheap xeons with decent core count (some of them are even multiplier-unlocked), and some X99 boards support RDIMM and LRDIMM. It may seem odd to say that you want both RDIMM/LRDIMM and overclocking but many of the server processors run at very low speeds compared to gaming systems, often 2.0-2.4 GHz or so, and just running at a modest 4 GHz or so on all 8 cores is easily achievable on X99 if the chip is multiplier-unlocked. Epyc is still better, you can achieve similar performance with much higher core counts, but you can get X99 chips and decent boards for a song, while (eg) Epyc 7402P is still almost a $1500 chip with $600+ boards for it. The one downside to X99 is that the System Agent is just not very mature compared to later iterations. Even 3000 speed RAM often requires a "BCLK strap" which is like a special multiplier just for the System Agent. This is often set automatically when you enable XMP, usually a 1.25x multiplier, but this can cause some problems with some PCIe and NVMe devices which don't maintain their own clocks. I haven't run into major problems with consumer-tier hardware but YMMV and "dumb" devices like IO Fusion cards might have more issues. I am thinking seriously about getting 8x32GB 2133 LRDIMM and using that as big NAS for homelab stuff, then transitioning to an Epyc 7402P at some future date, then upgrading RAM to something higher clocked once it gets cheaper.
- christkv 5y ago
  yeah mine runs at 3.9 Ghz stable without any major issues.

3 ms·

I have my old Intel® Core™ i7-5820K desktop with 32GB ram and a vega 54 running ubuntu and it's my main driver when working from home. Still does pretty much ev

by christkv 5y ago

I have my old Intel® Core™ i7-5820K desktop with 32GB ram and a vega 54 running ubuntu and it's my main driver when working from home. Still does pretty much everything I need.

paulmd 5y ago
X99 is a great "tinkerers" platform before stuff really got locked down. You've got tons of PCIe, quad-channel RAM, dirt-cheap xeons with decent core count (some of them are even multiplier-unlocked), and some X99 boards support RDIMM and LRDIMM. It may seem odd to say that you want both RDIMM/LRDIMM and overclocking but many of the server processors run at very low speeds compared to gaming systems, often 2.0-2.4 GHz or so, and just running at a modest 4 GHz or so on all 8 cores is easily achievable on X99 if the chip is multiplier-unlocked. Epyc is still better, you can achieve similar performance with much higher core counts, but you can get X99 chips and decent boards for a song, while (eg) Epyc 7402P is still almost a $1500 chip with $600+ boards for it. The one downside to X99 is that the System Agent is just not very mature compared to later iterations. Even 3000 speed RAM often requires a "BCLK strap" which is like a special multiplier just for the System Agent. This is often set automatically when you enable XMP, usually a 1.25x multiplier, but this can cause some problems with some PCIe and NVMe devices which don't maintain their own clocks. I haven't run into major problems with consumer-tier hardware but YMMV and "dumb" devices like IO Fusion cards might have more issues. I am thinking seriously about getting 8x32GB 2133 LRDIMM and using that as big NAS for homelab stuff, then transitioning to an Epyc 7402P at some future date, then upgrading RAM to something higher clocked once it gets cheaper.
- christkv 5y ago
  yeah mine runs at 3.9 Ghz stable without any major issues.