I wish people benchmark GEMM performance for all of us math folk.
Iirc gemm and float performance isn't very good, since amd made a decision to reduce math performance in order to decrease latency.
AMD Ryzen price and release date revealed
11–20 of 139 posts
Re: AMD Ryzen price and release date revealed
#12Earlier quoted context omitted.
The NDA on benchmarks is supposedly set to expire on February 28. [0] Not sure why this PC World article is coming up now. There have already been many stories on Ryzen pricing and the release date of March 2 has been known for several days now... [1] Product lauch video [2] [0] http://wccftech.com/amd-ryzen-reviews-live-february-28th-tes... [1] https://www.reddit.com/r/hardware/comments/5urylu/when_does_... [2] http…
It was known, but not official until now. Also, preorders are now live. [0] http://ir.amd.com/phoenix.zhtml?c=74093&p=irol-newsArticle&I...
Thanks
Re: AMD Ryzen price and release date revealed
#13Really looking forward to this, and I'm glad that AMD's management no longer seems to be on the pipe. Even if the real world perf is close to the $1K Intel chips it will be a win. It's going to force price cuts from Intel and hopefully spark some competition again.
It would be interesting if Apple used these chips in upcoming Mac desktops. I'm guessing that adopting these lower priced chips without lowering prices would have a negligible impact on sales for Apple if the performance is as good as AMD claims.
It would be nice. However, would they be able to still keep Thunderbolt?
Re: AMD Ryzen price and release date revealed
#14I'm optimistically looking forward until the independent benchmarks on March 2nd.
Agreed. I really want to know how having two memory channels is going to play out for memory intensive workloads like in-memory databases and caches. I've been wanting something wider to play with at home for a long time, but the AMD parts are slow, and the Intel parts are expensive and have expensive motherboards. I guess I don't want it that bad.
Intel motherboards are super cheap, the trick is to ignore the sucker options.
Re: AMD Ryzen price and release date revealed
#15I wish people benchmark GEMM performance for all of us math folk.
Iirc gemm and float performance isn't very good, since amd made a decision to reduce math performance in order to decrease latency.
It's not so much reduced math performance (it's twice faster than Bulldozer!), it's that Intel chips as of Haswell have dual 256-bit FPUs per core.
If you use them, the Intel chips downclock (sometimes severely) in order not to violate their TDP, but the dual FPUs are still there, and it's still a win for GEMM. I can see why AMD didn't follow along here, but it could be a factor in some small spaces - when you need GEMM but can't use a GPU.
Note that Ryzen can split its 256-bit FPU into two 128-bit units, so on code that's not using AVX, it's completely on par with Intel.
Re: AMD Ryzen price and release date revealed
#16[deleted]
Re: AMD Ryzen price and release date revealed
#17I wish people benchmark GEMM performance for all of us math folk.
Ah, but what should they benchmark GEMM with?
MKL? I don't think so, it takes the worst codepath if the chip isn't GenuineIntel. OpenBLAS? Doesn't have Ryzen support. Doesn't even recognize some AMD cores. ACML? Wasn't updated since 2013 or so.
This is a serious question. What are you supposed to do if you need a GEMM kernel for Ryzen? I sure hope AMD puts out updated ACML libraries real soon.
Re: AMD Ryzen price and release date revealed
#18Earlier quoted context omitted.
It would be interesting if Apple used these chips in upcoming Mac desktops. I'm guessing that adopting these lower priced chips without lowering prices would have a negligible impact on sales for Apple if the performance is as good as AMD claims.
It would be nice. However, would they be able to still keep Thunderbolt?
Considering that AMD Graphics Cards can be used behind the Thunderbolt interface I wouldn't be surprised. (XConnect)
If I remember correctly, you'd have to get permission to add Thunderbolt support into drivers....
Re: AMD Ryzen price and release date revealed
#19Earlier quoted context omitted.
It would be interesting if Apple used these chips in upcoming Mac desktops. I'm guessing that adopting these lower priced chips without lowering prices would have a negligible impact on sales for Apple if the performance is as good as AMD claims.
It would be nice. However, would they be able to still keep Thunderbolt?
The standard chipsets do have support for USB 3.1 Gen 2. But mixing in support for DisplayPort would require either a custom chipset (which Apple may be able to do but might not be as cheap), or wait until a Zen-based APU comes out.
Re: AMD Ryzen price and release date revealed
#20Earlier quoted context omitted.
Agreed. I really want to know how having two memory channels is going to play out for memory intensive workloads like in-memory databases and caches. I've been wanting something wider to play with at home for a long time, but the AMD parts are slow, and the Intel parts are expensive and have expensive motherboards. I guess I don't want it that bad.
Intel motherboards are super cheap, the trick is to ignore the sucker options.
Have you priced an LGA-2011v3 board recently? The cheapest board on Newegg is 125$ for a refurb. To my knowledge you can't get >4 cores with Intel without stepping up LGA-2011v3 or similar.
The quad-channel boards genuinely cost more to manufacture. It's not clear how much more because almost all of them are intended as server or enthusiast boards and have other things driving up the cost.
If Intel marketed LGA-2011v3 as a mainstream option then I think it might be reasonable, but I really can't tell.