Blitzvogel
Platinum Member
- Oct 17, 2010
- 2,012
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Haswell's new AVX2 instructions are 256-bit wide. But there are two 256-bit floating-point units per core, so they could definitely use them to assist the IGP.Would be cool to see 512 bit wide FPUs in Haswell that could dynamically work to aid the IGP.
Haswell's new AVX2 instructions are 256-bit wide. But there are two 256-bit floating-point units per core, so they could definitely use them to assist the IGP.
Three 256-bit units actually. Two of which capable of floating-point operations.Wow, 2x 256 bit units?
Bulldozer has four 128-bit units per module, two of which capable of floating-point operations (including FMA). Having an extra unit didn't make Bulldozer noticeable more powerful at 128-bit vector code though, because the floating-point units don't support any integer operations. Intel managed to do more, with less.Didn't AMDs Flex-FPU design give BD a general advantage in 128 bit SSE versus Sandy Bridge?
Heck SB got 2x the load/store BW and is around ~8% faster at the same clock vs Nehalem in non-AVX workloads.
i7-2600K has a 2% higher base clock and 5.5% higher turbo clock...Core i7 975 vs Core i7 2600K
...
That's a lot better than 8%, unless you want to cherry pick them.
i7-2600K has a 2% higher base clock and 5.5% higher turbo clock...
Fairly certain for most of us here 0% perf/clk gain will equal mediocre to bad. Especially its lot likely than ever before we'll get mere 100MHz frequency increases if at all. But I'm glad we'll get Sandy Bridge like IPC gains again.So it will be a great chip if IPC remains the same. It will be a phenomenal chip if IPC improves by 10%.
Would be cool to see 512 bit wide FPUs in Haswell that could dynamically work to aid the IGP.
I didn't say 0% perf/clock gain! I said it would still be a great chip if IPC didn't improve, and IPC is only one component of performance. Peak throughput per clock will double, and fewer cycles will be wasted on thread synchronization.Fairly certain for most of us here 0% perf/clk gain will equal mediocre to bad.
And yet with AVX2 the computational density doesn't differ a whole lot...Consider the size of the GPU portion to the size of one of the modules, of which only a part is the FPU.
For those still doubting the importance of AVX2 for next-gen gaming, here's this year's SIGGRAPH papers on GPU + CPU computing: http://bps12.idav.ucdavis.edu/
The CPU plays a very significant role in these new algoriths, and so having twice the computing power (AVX2), and efficient multi-threading (TSX) will have a real impact on your gaming experience.
lol, is possible to die by hype? BenchPress is near of doing it XD
dude...
there is nothing about AVX2, TSX in the link...
Is that a fact . Whats he suppose to do . Lead ya bye the nose . Heres just 1 0f many many statements that I got threw that link . 1 mans junk is anothers wealth.lol, is possible to die by hype? BenchPress is near of doing it XD
dude...
there is nothing about AVX2, TSX in the link...
I haven't really paid any attention to avx instructions or what they do.
I will probably google it later but what applications can/will use avx?
I haven't really paid any attention to avx instructions or what they do.
I will probably google it later but what applications can/will use avx?
*dear intel*
i would like to replace my almost 2yr old 990x with something faster, and have it be a true upgrade and not side grade.
so when will my wish come true?
PC's have become so stagnet, i can see the spiders make complex webs outside.
To be fair to Intel, aren't they kind of stagnated by lack of competition and lack of programers taking advantage of their advanced technology?
To be fair to Intel, aren't they kind of stagnated by lack of competition and lack of programers taking advantage of their advanced technology?
I mean thank (whatever power you believe in) that they are pushing ahead with the AZ plant....they could easily just re-fresh the same crap at higher base clocks if they really wanted to.
*dear intel*
i would like to replace my almost 2yr old 990x with something faster, and have it be a true upgrade and not side grade.
so when will my wish come true?
PC's have become so stagnet, i can see the spiders make complex webs outside.