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Forum: CPUs Today, 11:07 AM
Replies: 132
Views: 18,847
Posted By gruffi
I wouldn't bet on that. They really seem to be...

I wouldn't bet on that. They really seem to be enthusiastic about the GPU improvements. I guess that's not possible if it's just Tonga like. Even if delta color compression can improve bandwidth...
Forum: CPUs 11-21-2014, 04:01 PM
Replies: 132
Views: 18,847
Posted By gruffi
Could be. Interesting, John Byrne...

Could be. Interesting, John Byrne (https://www.youtube.com/watch?v=I6zX2IqBI7A) says Carrizo will have a "brand new graphics architecture" (01:22). I guess he wouldn't have said that if it's the same...
Forum: CPUs 11-21-2014, 09:37 AM
Replies: 132
Views: 18,847
Posted By gruffi
I guess it will have a maximum of 4 CUs. So you...

I guess it will have a maximum of 4 CUs. So you won't need much bandwidth. And because it's the same package as Carrizo it will be dual channel. That's still a significant improvement over single...
Forum: CPUs 11-17-2014, 03:20 PM
Replies: 937
Views: 113,824
Posted By gruffi
Btw, AMD's packing density is amazing. Intel...

Btw, AMD's packing density is amazing.

Intel 22nm: 5.56 billion transistors on 663.5 mm² = ~8.38 million transistors per mm²
AMD 28nm: 3.1 billion transistors on 244.62 mm² = ~12.67 million...
Forum: CPUs 11-17-2014, 02:43 PM
Replies: 937
Views: 113,824
Posted By gruffi
28nm should be cheap enough. Don't forget, <=22nm...

28nm should be cheap enough. Don't forget, <=22nm and FinFET is a lot more expensive per mm².
Forum: CPUs 11-13-2014, 11:11 AM
Replies: 32
Views: 3,219
Posted By gruffi
"Intel's pace of innovation" Best joke of...

"Intel's pace of innovation"

Best joke of the day. Thanks for the laugh.
Forum: CPUs 11-04-2014, 03:39 PM
Replies: 81
Views: 11,585
Posted By gruffi
Not really. That was just a demonstration of the...

Not really. That was just a demonstration of the technology on 32nm.
Forum: CPUs 11-04-2014, 09:59 AM
Replies: 50
Views: 8,258
Posted By gruffi
On AT forum they say Nexus 9 gets quite hot....

On AT forum they say Nexus 9 gets quite hot. Maybe throttling is the reason for stutters and slowdowns?
Forum: CPUs 11-04-2014, 09:57 AM
Replies: 81
Views: 11,585
Posted By gruffi
HDL was said to be used after Steamroller. So,...

HDL was said to be used after Steamroller. So, Excavator is the first core that might be designed with it.
Forum: CPUs 11-04-2014, 09:09 AM
Replies: 81
Views: 11,585
Posted By gruffi
If Carrizo's clocks are lower than Kaveri's...

If Carrizo's clocks are lower than Kaveri's clocks the IPC has to be improved by 50% or so to get 30% better power efficiency. Very unlikely. It has to be a mix of more clock and more IPC at the same...
Forum: CPUs 11-03-2014, 09:02 AM
Replies: 81
Views: 11,585
Posted By gruffi
Please stop quoting this site. It's getting...

Please stop quoting this site. It's getting ridiculous. They are using a lot of games and memory bound apps like 7-Zip or WinRAR. As I said before that's an inappropriate way to measure CPU...
Forum: CPUs 11-02-2014, 08:50 AM
Replies: 81
Views: 11,585
Posted By gruffi
Please ignore games. Games are and never were...

Please ignore games. Games are and never were good indicators of CPU performance. Games are rather an indicator of system performance. And apps like 7-zip or WinRAR are mostly memory bound. Actually...
Forum: CPUs 11-02-2014, 01:18 AM
Replies: 81
Views: 11,585
Posted By gruffi
Didn't you say the same about Steamroller which...

Didn't you say the same about Steamroller which actually increased IPC by ~15%?



True. No one here seems to know any concrete details about Excavator. So we just should wait and see. But I bet...
Forum: CPUs 11-01-2014, 09:58 AM
Replies: 81
Views: 11,585
Posted By gruffi
Where exactly? It says 24.2 GOPS (±6.0 GOPS) at...

Where exactly? It says 24.2 GOPS (±6.0 GOPS) at 2.6 GHz, or 9.51 GOPS per GHz. But yes, there are better and worse scores per GHz for Kaveri engineering samples. So, we shouldn't interpret too much...
Forum: CPUs 10-31-2014, 04:41 PM
Replies: 81
Views: 11,585
Posted By gruffi
I think you can't make any conclusions about...

I think you can't make any conclusions about performance yet. The numbers look odd. Processor arithmetic is too low for 2.6 GHz. Latency can't be that bad. Memory bandwidth seems to be single channel.
Forum: Article discussion 10-27-2014, 05:53 PM
Replies: 43
Views: 5,730
Posted By gruffi
According to your quotes I can't see a reason why...

According to your quotes I can't see a reason why it has to be Samsung. But I have to admit I can't follow your argumentation. It doesn't make any sense to me.

Actually everybody seems to have...
Forum: Article discussion 10-27-2014, 08:31 AM
Replies: 43
Views: 5,730
Posted By gruffi
The article only mentions yield problems with...

The article only mentions yield problems with 20nm, not 14nm. And this is quite odd because Samsung seem to have 20nm only for internal use, not mass production.
Forum: Article discussion 10-24-2014, 08:21 AM
Replies: 12
Views: 1,572
Posted By gruffi
I would be really surprised if it's Microsoft....

I would be really surprised if it's Microsoft. Back in the beginning of the year they were still sceptical (http://www.theregister.co.uk/2014/01/10/microsoft_arm_adoption/) about ARM. Though I think...
Forum: CPUs 10-23-2014, 05:13 PM
Replies: 422
Views: 55,233
Posted By gruffi
I talked about the last (launched) P4 which was...

I talked about the last (launched) P4 which was Cedar Mill and had over 30 stages (up to 3.6 GHz, not 3.7 GHz as I said before).


Netburst was in a completely different league frequency-wise....
Forum: Article discussion 10-23-2014, 10:48 AM
Replies: 316
Views: 26,285
Posted By gruffi
Well, that's actually the price for an API which...

Well, that's actually the price for an API which is closer to the hardware. But I think it's not really a problem. New games will get updates for current GPUs in time. Old games won't get updates...
Forum: CPUs 10-23-2014, 10:24 AM
Replies: 422
Views: 55,233
Posted By gruffi
Contrary to your belief, you shouldn't take...

Contrary to your belief, you shouldn't take everything at face value. ;)


When did they say that? The only statement from an engineer I know of was like "20-25% more frequency than Stars". More...
Forum: CPUs 10-19-2014, 06:20 AM
Replies: 422
Views: 55,233
Posted By gruffi
Just repeats what I already said. Half clock L2,...

Just repeats what I already said. Half clock L2, low power, no low latency.
Forum: CPUs 10-18-2014, 08:25 AM
Replies: 422
Views: 55,233
Posted By gruffi
Small cores are usually not designed to have low...

Small cores are usually not designed to have low latency. For example, look at the half clock L2 of Cat which actually increases latency. Small core are made for low power or high area/power...
Forum: GPUs 10-16-2014, 08:02 AM
Replies: 419
Views: 52,109
Posted By gruffi
Don't forget their is a >30% difference in...

Don't forget their is a >30% difference in clocks. It's not just about shaders. ;)

But as Stuckey already said, Tonga is just a replacement for R9 280(X). GM204's competition will be Hawaii's...
Forum: CPUs 10-16-2014, 07:54 AM
Replies: 422
Views: 55,233
Posted By gruffi
Low latency? The low latency vs high throughput...

Low latency? The low latency vs high throughput aspect is solved by HSA. What you posted looks more like low power vs high performance on a single core. Or in other words, it's big.LITTLE at core...
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