64 physical cores for under $300??!!

[SpaceGhostC2C]

36 minutes ago, sebastiansulb said:

This may not be the most powerful Opteron chip but it is 16 cores. 

 

http://www.ebay.com/itm/AMD-Opteron-6276-OS6276WKTGGGU-16-Core-2-3GHz-16MB-L3-Cache-CPU-Processor-/172642515743?hash=item28324bbb1f:g:x-AAAOSwr~lYtbax

 

$30 per CPU

Too bad they would kill me with shipping, if at all

I would still lack a server to put them in, though. 

18 minutes ago, Jumper118 said:

you do realise its 2x fx8350 one one cpu that are down clocked  

That could still be better than my current 2-node OC FX cluster over ethernet.. But so are so many other things, the key is cost-effectiveness... 

[Pasi123]

29 minutes ago, mariushm said:

You can look at http://cpubenchmark.net/cpu_list.php to get a sort of idea about what performance to expect from them.

 

Opteron 6276 is listed on that site as having a score of 9011 .. consider the Ryzen 1800x has a score of 15376 .

 

Also you'd need a lot of DDR3 ECC memory, maybe 4 or 8 sticks per cpu ... and most software would tend to stick to one CPU or would have slightly degraded performance if there's threads on multiple physical processors, and they'll use a lot of power.

 

4x Opteron 6276: https://browser.primatelabs.com/v4/cpu/2681582

 

Ryzen 7 1800X: https://browser.primatelabs.com/v4/cpu/3103860

[NTDaws]

2 hours ago, Nicnac said:

sounds fun but what are you gonna do with a bunch of slow cores?

Minecraft clearly

[mariushm]

1 minute ago, Pasi123 said:

4x Opteron 6276: https://browser.primatelabs.com/v4/cpu/2681582

 

Ryzen 7 1800X: https://browser.primatelabs.com/v4/cpu/3103860

Yeah, luckily the Opteron system was tested with 256 GB of memory, filling all four channels of each processor  (256 / 4 cpu / 4 channel / 2 sticks per channel =  32 x 8 GB sticks at the very least). The Ryzen had  only 16 GB of memory. 

It's not quite apples to apples comparison.

 

Even so you can see at the bottom memory latency 140 ns and 23.5 GB/s memory bandwidth compared to Ryzen which has 80ns and 35 GB of bandwidth.

 

With just dual channel for each cpu, the performance of the Opteron would have been much worse due to all the copying of data between cpus and cache trashing.

 

 

[daweakling]

2 minutes ago, mariushm said:

With just dual channel for each cpu, the performance of the Opteron would have been much worse due to all the copying of data between cpus and cache trashing.

Another reason to build a 4x Opteron system is to test this. 

[SpaceGhostC2C]

2 minutes ago, mariushm said:

 

It's not quite apples to apples comparison. 

 

Of course it isn't, and it won't be: one is a dual channel CPU, the other is a quad channel, quad socket server. 

That's the whole point, and that's why people saying "better Ryzen!" are wrong. 

We're not debating who has the better IPC. We're just discussing the fun of building this very specialized machine. (that's also why it has to be cheap). 

Isn't that what enthusiast do, playing with all sorts of computer stuff and learn, especially if they haven't tried before? 

Or has marketing convinced us that "enthusiast" means buying the most expensive toys even if we have no clue about what we're doing?

 

[mariushm]

The opteron build wouldn't be cheap

 

You may find a quad cpu board for something like 100-200$ but it would be extended atx or full server board, which wouldn't fit in regular atx cases.

Then you'd have to also buy 4 proper heatsinks + fans for them ... if I remember correctly the heatsinks for the opteron screw to the case and not the motherboard .. so you'd need heatsinks and fans with backplate or something like that.

You can buy the processors cheaply on eBay but you don't get heatsinks and fans with them, that's extra 20-40$ a cooler .

Then you HAVE to populate the board with memory sticks, and some boards won't boot with less than 2 sticks per cpu or all sorts of issues like this.  Memory is not cheap when you have to buy lots of it... it's around 100-140$ for 64 GB of memory

Then you also need a power supply capable of powering the system .. these boards usually have at least 2 x 8pin eps connectors, and it's kinda hard to find cheap power supplies that come with two of these.. so you'd have to buy new power supply.

 

And you also have to look at it from the performance per dollar point of view ... you'd have 4 cpus with 120w tdp that barely do twice as much as a single cpu with 95w tdp... you realize how expensive your fun is when the electricity bill comes in your mailbox.

 

Anyway, yeah, it would be fun to build such a system to mess around with it, but it wouldn't be cheap... basically it's a bit too expensive just to make a 5-10 minute youtube video out of it.

 

[Guest]

1 hour ago, mariushm said:

You can look at http://cpubenchmark.net/cpu_list.php to get a sort of idea about what performance to expect from them.

 

Opteron 6276 is listed on that site as having a score of 9011 .. consider the Ryzen 1800x has a score of 15376 .

 

Also you'd need a lot of DDR3 ECC memory, maybe 4 or 8 sticks per cpu ... and most software would tend to stick to one CPU or would have slightly degraded performance if there's threads on multiple physical processors, and they'll use a lot of power.

 

Someone took this post too serious 

[System Error Message]

for 64 cores you can host a massive website or have a web crawler, they dont need fast cores only plenty. As long as the architecture is similar to the amd phenom ii its still decent as thats better than the core2 architecture if comparing the manycore core2 xeons that are being sold. Its great for cracking, web crawling,mining and as your basement heater.

[Vandorlot]

Why would you need a bunch of slow cores. 

[daweakling]

22 hours ago, mariushm said:

basically it's a bit too expensive just to make a 5-10 minute youtube video out of it

Not for Linus?! @LinusTech

[Guest]

4 minutes ago, Gamingconsole said:

Hello friends, I would like to ask a question What fps is best for playing Racing car games, Tekken 7?

I'd assume In racing games above 100 fps if you have a 144 hz monitor, dont know tho tbh. 60 fps probably fine, same with tekken (I wouldn't really know tho cause if you have 144hz I've never tried it) btw why are you asking this on this thread?

[Simon771]

It can be fun to do that.

But it's low clock speed. Horrible IPC, power hungry, old.

 

Then again in my company we are using something like this for windows server 2008 r2 with over 50 active users.

[Gaurav S Rao]

On 6/13/2017 at 8:15 PM, Gaurav S Rao said:

Wow,64 CORES UNDER $300? Linus should make a video about that and maybe someone else,then its like "Go to hell!" for threadripper,even if it is slow cores for Opeteron,it is 4x more cores and ESPECIALLY,f*ck the 7700K and absolutely wreck the sh*tty celeron and the budget Pentium,wonder if it has HT (Not heard of a opteron before) so probably if there was a 8 CPU Motherboard then... Ok,seems like a VERY VERY SHINY DEAL!

Said that a long.... time ago and had forgotten what IPC was on this....

[Gaurav S Rao]

On 6/13/2017 at 8:06 PM, sebastiansulb said:

I was recently on eBay browsing around for cheap server high core count CPUs. I remembered about AMD Opteron series and was interested in pricing. On eBay the 16 Core Opterons usually go for $50-$70 each. Pair that with the Dell PowerEdge quad socket server board and some RAM and you have a 64 core power house.

 

I was wondering what the communities opinions on this are?

 

Will it run Crysis on 1600FPS?       Just kidding no, IPC sucks on these probably.

Would be good for the 64 Gamers one CPU (just kidding,4 cpu's and if single core dedicated to each vm...minesweeper 20 fps,and where are the GPU's? Oh fuck,got bankrupt) anyway its over 32x powerful than my system (which sucks,and idk if it even works anymore,if it does then probably Q6600 in 2012,still better than a E6550 in 2017)

 

[Ground]

For RAM you could go with a bunch of 2GB DDR3 ECC sticks, those are usually pretty cheap.