[Softpedia] 2014-Bound Intel Broadwell-K CPUs Get 80% Graphics Boost from Iris Pro

[IntelUser2000]

Not really. Let's say 1.5x-1.6x is a more realistic improvement.

80% over GT2 is a fail. Get over it. And I doubt Intel failed so much with Gen8.

Which is why 80% is NOT a fail. GPU performance is ultimately limited by process, get over it.

Ivy Bridge at the same frequency improved ~50%, with latest drivers it's bigger. Intel claimed that Gen8 is a bigger step.

In features, not necessarily in performance. It would be good to notice they compared Gen 3 to Gen 4, which didn't really bring performance gains.

I haven't said this.

Yes you did. By assuming 80% faster is GT3 vs GT3, something that would be a class higher(ie. GT3 vs GT2) would be ~3x the speed.

 

[mikk]

Which is why 80% is NOT a fail. GPU performance is ultimately limited by process, get over it.

Is 80% a fail? It certainly isn't. Is 80% for a Gen8 GT3e over Gen7.5 GT2 a fail? Yes it is. Furthermore a Desktop CPU with 80W TDP headroom or something like that isn't power restricted. Broadwell is not just a shrink, it comes with a next gen graphics, this is how they call it. A shrink and next gen GPU generation which results in just a 10% gain over the old gen GT3e is poor, only a biased one could whitewash such a poor improvement.

In features, not necessarily in performance. It would be good to notice they compared Gen 3 to Gen 4, which didn't really bring performance gains.

Have a look to two launch reviews.

HD3000 1350 Mhz +17,5%
HD4000 1150 Mhz

Speed gain was in the 30-40% range with 200 Mhz less. As I said at the same frequency Gen7 improved by about 50% over Gen6. Intel already is up to date regarding features more or less. I know there is coming native 2xMSAA support, but besides this all new possible features like OpenCL 2.0 support or DX11.2 is more driver than hardware related. The Intel engineer on reddit referred to performance more than twice.


If you're into energy efficiency or even more graphics, Broadwell. I think the tech community will be very pleasantly surprised with Broadwell.

Big leaps coming in Broadwell.

We are allocating more die area to graphics. So expect to see a definite improvement from Ivy Bridge to Haswell. Then expect a bigger leap from Haswell to Broadwell. My guess is we will leapfrog ATI on-die graphics with Broadwell.

Haswell will improve over Ivy Bridge. Broadwell will be a bigger jump.

Yes you did. By assuming 80% faster is GT3 vs GT3, something that would be a class higher(ie. GT3 vs GT2) would be ~3x the speed.

Don't be silly, I haven't made any performance claims about GT4 (how could I without infos if this exists or to what models it comes???) and I'm still waiting for your proof. Is this just a wishful thinking? You claimed a GT4 will come for Notebooks, then give a source. In the Mesa code there is no GT4: http://cgit.freedesktop.org/mesa/me...l&id=4babc50adbf17b5df2e4d304d0b8b4a1d357f552

 

[mikk]

A full powered 65W Iris Pro adds another 7% faster to a 55W Iris Pro. In such purely heavy GPU bound tests a non TDP restricted full powered Iris Pro already is 80-100% faster than Haswell GT2 and Broadwell-K should have a bigger TDP than 65W. This is what I meant that the CPU-world claim must be inaccurate. Maybe there is no edram on a Broadwell-K or 80% is just wrong.

 

[Shivansps]

yeah its either wrong or it is 80% over GT3... comparing GT3 broadwell to GT2 haswell does not make any sence.

 

[NTMBK]

Looking promising. Hopefully part II will have gaming benchmarks comparing it with Kaveri.

 

[mikk]

yeah its either wrong or it is 80% over GT3... comparing GT3 broadwell to GT2 haswell does not make any sence.

GT3 could make sense but not GT3e. If Broadwell-K with GT3 has no edram it could run into a big bandwidth bottleneck. If Broadwell-K gets GT3 with edram the 80% claim over HSW GT2 must be wrong. CPU-world clearly missed something. I'm not convinced anymore that Broadwell-K really gets GT3e.

 

[AtenRa]

Haswell GT3(non eDRAM) is completely Memory BW limited like Richland and Kaveri. Adding more EUs will not raise performance 80% in BW limited scenarios like Gaming.

Unless they are talking about compute, but again doubling the iGPU over 40EUs of Haswell will be too much for a high volume part in a new expensive process.

 

[mikk]

There are only 28W ULV parts for HSW GT3. edram makes a big difference nonetheless.

 

[witeken]

Looks like impressive graphics performance gains across the board for both Cherry Trail and Broadwell in 2014. If Cherry Trail-T has 16 EUs I wonder how many EUs Broadwell GT3/GT4 will have.

Broadwell GT3 will have 20% more EUs than Haswell GT3. GT4 will have 2x as many EUs (96). Is GT4 actually a confirmed gpu?

 

[IntelUser2000]

Haswell GT3(non eDRAM) is completely Memory BW limited like Richland and Kaveri. Adding more EUs will not raise performance 80% in BW limited scenarios like Gaming.

One of Intel presentations talked about the impact of eDRAM on performance to be ~30%.

See, there's more than just memory BW limiting Haswell GT3. As we know from Ivy Bridge examples, quad core HD 4000 was ~20% faster than dual core HD 4000, even with same BW and EUs.

Unless they are talking about compute, but again doubling the iGPU over 40EUs of Haswell will be too much for a high volume part in a new expensive process.

Actually, I wouldn't call it that expensive considering they are transitioning ALL of mobile chips to 14nm. That's ~60% of their market.

Because 14nm offers 2x density increase, and because GPU doesn't take up 100% of the die, they can put in a GT4 with barely any increase in die size over GT3 22nm parts.

 

[jj109]

Haswell GT3 had texture unit bottleneck too, which is why it was relatively good at compute compared to game graphics.

 

[IntelUser2000]

Haswell GT3 had texture unit bottleneck too, which is why it was relatively good at compute compared to game graphics.

Yes. Probably is one of the reasons for deficiency against similar specced GT 650M. The latter features nearly double the texturing performance.

Broadwell GT3 will have 20% more EUs than Haswell GT3. GT4 will have 2x as many EUs (96). Is GT4 actually a confirmed gpu?

No its not. But I consider Anand's reports of GT4's existence pretty credible. Whether they actually get that part out is another story.

 

[mikk]

http://chinese.vr-zone.com/105547/i...n-is-fourth-intel-core-unlocked-cpu-03202014/


At least Iris Pro is confirmed from another source.

 

[Khato]

Nice find, quite a few interesting tidbits there. Especially the bit about an unlocked pentium - so long as it's in the same sub-$100 range as current pentium models it could make for a fun budget overclocking option from Intel for the first time in how long?

 

[bullzz]

lots a encouraging info there

better TIM? so higher clocked parts on haswell?
iris pro across all SKUs will be really nice
and wudnt an unlocked pentium eat into i3 sales?

great find OP

 

[kimmel]

http://chinese.vr-zone.com/105547/i...n-is-fourth-intel-core-unlocked-cpu-03202014/

At least Iris Pro is confirmed from another source.

Nice leak, probably worthy of a new thread in and of itself:
- Haswell refresh coming with new TIM materials for at least some SKUs.
- Iris Pro in a socketed Broadwell.
- Unlocked Pentium SKU.
- 8 and 9 series chipset support info.

 

[pw257008]

doesn't seem 2014 bound anymore