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[PSLS] The PS4′s “Big Challenge” is its AMD Chip that “Heavily Relies on Multi-Threading,” Says Planetside 2 Dev - Page 47  

post #461 of 464
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Originally Posted by SCollins View Post

ahh no, ICC only supports SSE2, thats it.

Everything except AVX since 11.x (late 2011), cf. agner.org.
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post #462 of 464
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Originally Posted by Moustache View Post

Not for Intel though. If this whole thing is true, people will buy AMD CPUs knowing that they are cheaper and can run next-gen games as good as Intel. How is that a win for Intel?

Intel is better clock for clock. And HyperThreading is a very real benefit in applications that are designed for multiple threads. In most benchmarks of multi-threaded applications, Intel chips completely dominate. Even when there is no hyperthreading and it's a 4-core intel chip vs. an 8-core AMD chip. When looking at Cinebench, for example, where the FX-8350 (surprisingly?) scores higher than the i7 3570k by 15%, the i7 3770k steps up. Admittedly, the 3770k is also clocked 2.6% higher than the 3570k, but HyperThreading actually gives it a 30.7% boost in performance. This positions it 14% ahead of the FX-8350.

You can see the same thing happen in Handbrake H264 encoding. The FX-8350 with 8 Cores @ 4.2GHz (33.6GHz total power) is about 8.5% faster than the 3570k with 4 Cores @ 3.8GHz (15.2GHz total power). However, when we enable HyperThreading and up the clocks by 2.6% ala 3770k....we get an 18.4% faster encode time over the 3570k, which means the 3770k ends up being 9.2% faster than the FX-3850.

So essentially...whatever percent increase the 8-Core AMD chip gets from multi-threaded applications over the 4-Core Intel chip, HyperThreading doubles it. I'm positive there are cases where this isn't true. But in most cases, the 3570k is faster than the AMD chip without needing HyperThreading. I understand what HyperThreading is. I know it's not free magical cores. I know it can actually slow down performance in apps not designed for multi-threading and that's why for some games and applications I disable it on my 3770k.

The argument for AMD is, and will be for the next little while, that you get more Bang for your Buck. As new consoles come out and ports start using multiple threads, the value of the AMD chips will go up even higher. And an FX-8350 at $200 will be a better buy than the $220 3570k. That's great news for AMD, and I've been waiting anxiously for the new consoles to come out so all of us can benefit from this. However, as I mentioned, this gain will be even more pronounced for current HyperThreading enabled Intel CPU's. Essentially, everybody wins. Except the 3570k crowd. tongue.gif
post #463 of 464
Quote:
Originally Posted by redhotiron2004 View Post

Sent from my MK16i

Latest games are already maxing out the 4 cores. 6 cores could be a much more future proof solution. Also, as the ps4 and latest xbox are going to be utilizing multi cores. It would be a bad idea to go for anything less than 6-8 cores for the future.

Games that outform Haswell quad cores with SB-E are few though, and they will be for a while. Having more cores helps, but even with heavily multithreaded games, they're not like encoding a video, where you can split the workload evenly and get good results

To my knowledge, there's not a single game that fx-8350 (8 core) beats 3930k (6-core) in, oc vs oc or even stock vs stock, and the 3930k actually wins by a pretty big margin, in a perfectly threaded game or a badly threaded one, you'd also see the 4770k beat the 8350. It's a matter of price though, the 8350 costs half as much. It's not really down to more cores being better though, just which one brings the best or more affordable multithreaded or singlethreaded performance. Steamroller will probably shift the dynamic to being a bit better than 4770k multithreaded (when you utilize more than 7, or 7 or more cores well) but a lot worse single while also being cheaper, if the games are all perfectly multithreaded, it would be an obvious choice, but it's very difficult to scale sideways that much vs just scaling up, many of the CPU bound games that utilize well 4 or 6 cores, are more reliant on the performance of a single core or two and it shows pretty strongly in some benchmarks
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post #464 of 464
I think this thread has ran its couse. Thanks everyone
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Overclock.net › Forums › Industry News › Video Game News › [PSLS] The PS4′s “Big Challenge” is its AMD Chip that “Heavily Relies on Multi-Threading,” Says Planetside 2 Dev