TPU's WCG/BOINC Team

[mstenholm]

No, they'd be split between my 2 Ryzen rigs.

OK, I will refrain from testing then. Windows and MCM are consitent, Linux and Zika isn't. No way to conclude anything from a 24 hour test.

 

[Nordic]

Is there any kind of quick benchmark I could check for you to see if memory speeds changes crunching performance? I don't know of any. I don't want to crunch for 7 days with different memory speeds to find out.

 

[phill]

With the numbers I'm getting with my 1700X at stock ram timings, if the truth of Ryzen is anything to go by, absolutely get faster ram for them, as it will help towards extra performance. Saw on Newegg a few days ago there where 3200 16Gb kits for $65 bucks maybe plus tax I can't remember, but a bloody bargain.. It's a shame I never had any spare cash for some...

@thebluebumblebee Here's some ram on offer.... Or what about this or even this....... Maybe something like this?? Or if 16Gb isn't enough.... Here's 32Gb

Hope that helps

 

[mstenholm]

Is there any kind of quick benchmark I could check for you to see if memory speeds changes crunching performance? I don't know of any. I don't want to crunch for 7 days with different memory speeds to find out.

Yes there is, kind of. In BOINC Manager, Tools, CPU-bench? (? I use a Danish version)

 

[Nordic]

I know of that but it doesn't produce a number I can reference

 

[mstenholm]

I know of that but it doesn't produce a number I can reference

I know that's why I wrote kind of.

The posts about RAM speed got a all new meaning to me this morning. My daily rig, that I often turn down for the night in summer times, got no further then C0/C1 (translate into RAM detection on my GB MB). Since I had another kit laying on the desk I swapped them, Voila. This rig is so close to be retired.....give me my 3900X

 

[thebluebumblebee]

"The AMD EPYC 7742 is the Rome processor at the top of their stack with 64 cores / 128 threads, 2.25GHz base frequency, 3.4GHz boost frequency, and a 225 Watt TDP..., and will command a retail price around $6,950 USD." Credit: https://www.phoronix.com

That works out to $109 per core. The 3950X, at $750, costs $47 per core
Power consumption? His testing showed it peaked at 405 watts, for the 2P system! (CPU power only) (actually lower than TDP)

So, 8 Ryzen 3950X's or 2 EPYC 7742's for 128 CORES?

EDIT: EPYC system has built in VGA. Ryzen systems would need a video card for setup.

 

[phill]

"The AMD EPYC 7742 is the Rome processor at the top of their stack with 64 cores / 128 threads, 2.25GHz base frequency, 3.4GHz boost frequency, and a 225 Watt TDP..., and will command a retail price around $6,950 USD." Credit: https://www.phoronix.com

That works out to $109 per core. The 3950X, at $750, costs $47 per core
Power consumption? His testing showed it peaked at 405 watts, for the 2P system! (CPU power only) (actually lower than TDP)

So, 8 Ryzen 3950X's or 2 EPYC 7742's for 128 CORES?

EDIT: EPYC system has built in VGA. Ryzen systems would need a video card for setup.

So when are you buying the 8 Ryzen systems then @thebluebumblebee ??

 

[Nordic]

"The AMD EPYC 7742 is the Rome processor at the top of their stack with 64 cores / 128 threads, 2.25GHz base frequency, 3.4GHz boost frequency, and a 225 Watt TDP..., and will command a retail price around $6,950 USD." Credit: https://www.phoronix.com

That works out to $109 per core. The 3950X, at $750, costs $47 per core
Power consumption? His testing showed it peaked at 405 watts, for the 2P system! (CPU power only) (actually lower than TDP)

So, 8 Ryzen 3950X's or 2 EPYC 7742's for 128 CORES?

EDIT: EPYC system has built in VGA. Ryzen systems would need a video card for setup.

Now factor in the power cost to run each setup for 3 years 24/7

 

[mstenholm]

Now factor in the power cost to run each setup for 3 years 24/7

Well, at least they will beat anything currently around in the high end. +50k PPD (3900X on Linux, so about the same for the extra cores and the Windows tax) for 230 W or there about is not bad.

 

[theonedub]

The 64c chips look mighty tempting and I haven't even let the 32c chip stretch it's legs thanks to a heatwave out here

 

[thebluebumblebee]

So when are you buying the 8 Ryzen systems then @thebluebumblebee ??

When I win the lottery. Do you have to buy a ticket to win?

for 230 W or there about is not bad.

Am I wrong for thinking that a 3950X will use about the same watts as the 3900X which w1zzard tested at 168 watts?

Now factor in the power cost to run each setup for 3 years 24/7

Phoronix tested that the dual 7742's pulled 405 watts at the most (via unofficial software), and that's just for the CPUs. If we add 200 watts just to be safe, then we're at 600 watts. (AMD is not allowing reviewers to release 2P power usage numbers ATT, but servethehome.com posted 1P at just under 350 watts for the whole system) The 8 Ryzen systems would use (170*8) 1360 watts. You figure it out from there.

:

 

[Nordic]

600w ran 24/7 at my national average of 12 cents a killowat equals $51.84 a month. 1360w would equal $117.504 a month.

Without accounting for inflation, rising energy costs, or carbon externalities it would take 8.5 years for the EPYC system to break even with the 8 ryzen systems.

 

[mstenholm]

@thebluebumblebee . Sure the official numbers for 3900 and 3950 are the same but there is no way that the later will reach near the rated boost and still be that low. Add that running that CPU 24/7 will take more then one 120 mm fan, more likely a decent WC setup. We will see but it will be closer to 230 then 168 W is my guess. In any case it will be a beast, so looking forward to get my hand of one.

600w ran 24/7 at my national average of 12 cents a killowat equals $51.84 a month. 1360w would equal $117.504 a month.

Without accounting for inflation, rising energy costs, or carbon externalities it would take 8.5 years for the EPYC system to break even with the 8 ryzen systems.

For that kWh price I would run all my GPUs 24/7/365, it's +30 US cents in Europe in general. I keep it under 35 kWh/day during summer just to get something to eat

 

[Nordic]

It seems very few ryzen cpus above the 3600x reach their advertised boost clocks, nor can they sustain clocks over 4.2ghz for very long.

 

[mstenholm]

It seems very few ryzen cpus above the 3600x reach their advertised boost clocks, nor can they sustain clocks over 4.2ghz for very long.

Yes I know and the worst example, a 3900X, was presented today by Planet 3D now. Old BIOS might have played in but they managed to get it about zero MHz above base.

 

[phill]

When I win the lottery. Do you have to buy a ticket to win?

I think it helps a little bit....

The solar has been utterly pants today, barely made 3kW all day... So glad I didn't put many systems on today...

 

[theonedub]

Even though it's been 100F+ this past few days, I let the 2990wx go unrestricted and it performed well. I think the latency between dies without access to the memory causes me to lose production beyond the Windows tax though. When I ran the 28t Xeon full it would get about 28d of runtime every day (essentially a day of runtime per thread) the 2990wx does ~60d of runtime per day. Much bigger hit than I anticipated. Will have to experiment with Linux but maybe that will wait till the fall and cooler weather.

 

[bogmali]

My Cryorig AM4 mounting adapter finally came in (courtesy of Amazon) and I had to swap out the Noctua D-14 cause it looks so out of place (for a lack of better term). Took her offline for maybe 20-30 minutes so I can do the swap and now she looks much better hehe...

 

[phill]

Liking the perspex top and motherboard tray Nice

 

[Arjai]

Looking for some DDR3 for a cruncher/gaming/TV box.

I posted in the sales forum, thought I would ask the team to look around, also.

https://www.techpowerup.com/forums/threads/ddr3-1600-2x8-or-4x4.259510/

 

[phill]

Not sure if this is of any good to you Arjai?? 2 x 8Gb Crucial DDR3 1600Mhz

 

[Arjai]

I might have a lead from a TPU-er, for a 4x8gGB kit. I haven't heard back yet. I can ebay some stuff tonight after work, if that won't work...Also, not a fan of China ram sellers. I have had some great deals but, also some not so great and the ship times are ridiculous. I have time to wait for the right deal. I don't want to have to deal with it again.

 

[phill]

Understood Just sure the offer there for the RAM as I've been after some 16Gb DDR3 kits as well For the crunching I try and go as cheap as I can whilst still using something that's well known.. Hopefully then you won't get any issues down the road

I did see the offer in the thread which if I'm honest, I'd be more interested in over the stuff from China. I was aiming for about £40 a 16Gb kit. £50 was my limit

 

[Arjai]

@phill for the crunchers, not such a big deal but this is also going to be my gaming rig, of sorts, and i want it to be fast ram with nice timings to get the most out of it, when I devote my free time to it. Don't get much of it right now, working towards getting more, though, slow process.