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Search: Posts Made By: 3dilettante
Forum: Console Technology 01-Sep-2014, 22:42
Replies: 784
Views: 87,002
Posted By 3dilettante
It's risky to extrapolate from a platform whose...

It's risky to extrapolate from a platform whose TDP is close to 1/10 that of a console. The load performance scenario is likely only a few watts away from what the console APU idles at.

The...
Forum: Console Technology 30-Aug-2014, 08:54
Replies: 784
Views: 87,002
Posted By 3dilettante
I don't have any benchmarks for those. For...

I don't have any benchmarks for those. For either console, it should be closer to 6 cores since the other two appear to be reserved. There aren't exact numbers but Durango was listed as having ~190...
Forum: Console Technology 29-Aug-2014, 19:10
Replies: 784
Views: 87,002
Posted By 3dilettante
The most simplistic way of doing things would be...

The most simplistic way of doing things would be to configure the discrete board with an APU to run as its own system, and treat the CPU at the far end of the non-coherent bus as an IO service...
Forum: Console Technology 29-Aug-2014, 17:00
Replies: 784
Views: 87,002
Posted By 3dilettante
It's a hierarchy of bad things: a less than peak...

It's a hierarchy of bad things: a less than peak high-bandwidth DRAM bus is a better problem to have than getting stuck on a clunky and skinny expansion bus.

The current discrete PC design splits...
Forum: Console Technology 29-Aug-2014, 08:33
Replies: 784
Views: 87,002
Posted By 3dilettante
At a base level, there are physical constraints...

At a base level, there are physical constraints on the behavior of any device, and the DRAM bus and DRAM arrays have very significant restrictions and latencies.
DRAM favors highly linear accesses...
Forum: 3D Architectures & Chips 29-Aug-2014, 05:18
Replies: 158
Views: 17,114
Posted By 3dilettante
You mean 6 Gbps, right? GDDR5 doesn't clock its...

You mean 6 Gbps, right?
GDDR5 doesn't clock its bus to 6GHz. Since it is DDR, the data bus clock is half that.
The upper tiers of DDR4 may eventually bump into the lower range of GDDR5.

High...
Forum: Console Technology 28-Aug-2014, 23:46
Replies: 6
Views: 857
Posted By 3dilettante
Most of what has been said by AMD has been more...

Most of what has been said by AMD has been more consistent with K12 being AMD's custom ARM core, with a generally equivalent x86 sibling of undisclosed designation.


There'd be nothing wrong with...
Forum: Console Technology 28-Aug-2014, 23:26
Replies: 784
Views: 87,002
Posted By 3dilettante
I think you mean ESRAM. The smaller die would...

I think you mean ESRAM.
The smaller die would be true as long as nothing else changed about the chip.
Higher yields is a qualified yes, if absolutely nothing else is put in its place. In...
Forum: Console Technology 28-Aug-2014, 23:21
Replies: 784
Views: 87,002
Posted By 3dilettante
Any details on this beyond the noncommittal...

Any details on this beyond the noncommittal answers from Microsoft?


That's one way to look at it.
I prefer that my devs be carefree.


It never did outside of Orbis, although it is alleged...
Forum: 3D Architectures & Chips 28-Aug-2014, 07:00
Replies: 158
Views: 17,114
Posted By 3dilettante
Which part did they pull off? Not an OoO...

Which part did they pull off?
Not an OoO core--referencing Denver, and most probably not a complex CPU core with no errata--referencing everyone.

Barring a crippling flaw that somehow breaks the...
Forum: Console Technology 27-Aug-2014, 18:45
Replies: 632
Views: 86,974
Posted By 3dilettante
I was elaborating that it was slow on the the...

I was elaborating that it was slow on the the consoles because they are architecturally incapable of performing the operations expected of a peer in a coherent cache hierarchy.

If it's a question...
Forum: Console Technology 27-Aug-2014, 16:35
Replies: 632
Views: 86,974
Posted By 3dilettante
Bare-minimum cache hierarchy that statically...

Bare-minimum cache hierarchy that statically links cache L2 slices with physical memory channels.
It's trivially coherent within the GPU, by architecturally disallowing multiple coherent copies....
Forum: 3D Architectures & Chips 27-Aug-2014, 07:33
Replies: 158
Views: 17,114
Posted By 3dilettante
Are you speaking of a double compare and swap? ...

Are you speaking of a double compare and swap?
Is it a double compare and swap of two locations at arbitrary addresses?
Since we are mixing discussion between CPU and GPU, by cache line do you...
Forum: Processor & Chipset Technology 26-Aug-2014, 17:55
Replies: 6
Views: 1,443
Posted By 3dilettante
The base ISA is certainly svelt. As an...

The base ISA is certainly svelt.
As an educational tool, it looks to be useful.

Perhaps it is an argument for old-style RISC simplicity, or maybe a constraint inherent to the claim that it is not...
Forum: 3D Architectures & Chips 26-Aug-2014, 08:36
Replies: 158
Views: 17,114
Posted By 3dilettante
This is actually partly a response to some of the...

This is actually partly a response to some of the earlier discussion on transactional memory, that I was too slow to think about.
The first point on lockstep is interesting, in the sense that true...
Forum: Console Technology 25-Aug-2014, 17:01
Replies: 4,511
Views: 640,321
Posted By 3dilettante
I've seen a few anecdotal reports of the digital...

I've seen a few anecdotal reports of the digital versions of some games flaking out on PSN validation errors when it went down.
Is that a phone-home deal or possibly some kind of account issue where...
Forum: 3D Hardware, Software & Output Devices 25-Aug-2014, 16:56
Replies: 45
Views: 3,256
Posted By 3dilettante
Tahiti had large GDDR5 PHY, something on the...

Tahiti had large GDDR5 PHY, something on the order of being half as dense as Pitcairn's. About 20% of Tahiti was the interface.
One of Hawaii's marketing points was its cramming a full 512 bits...
Forum: 3D Hardware, Software & Output Devices 24-Aug-2014, 21:44
Replies: 45
Views: 3,256
Posted By 3dilettante
It does keep them distinct.

It does keep them distinct.
Forum: 3D Hardware, Software & Output Devices 24-Aug-2014, 21:37
Replies: 45
Views: 3,256
Posted By 3dilettante
I did have the urge to look back at the launch of...

I did have the urge to look back at the launch of the 680.
It's not as close as you state.


AMD still has its cooler to differentiate it.
Forum: Console Technology 22-Aug-2014, 17:38
Replies: 4,511
Views: 640,321
Posted By 3dilettante
I don't think any developer that has had to care...

I don't think any developer that has had to care about memory bandwidth in the slightest in their career would have taken the peak theoretical number as anything but a theoretical peak.

Within the...
Forum: Console Forum 22-Aug-2014, 17:32
Replies: 166
Views: 15,600
Posted By 3dilettante
The DF quote is hearsay twice (edit: at minimum)...

The DF quote is hearsay twice (edit: at minimum) over. It's Hight paraphrasing someone or giving a summarization, and then we have the article as another intermediary.
We have an article we must...
Forum: Console Technology 22-Aug-2014, 17:18
Replies: 4,511
Views: 640,321
Posted By 3dilettante
The graph doesn't provide information on the...

The graph doesn't provide information on the methodology used for the test, or whether it was just some kind of average over a range of workloads.

One can find all the reviews for CPUs on the net...
Forum: Console Forum 21-Aug-2014, 22:39
Replies: 3,277
Views: 174,539
Posted By 3dilettante
The story said that permission was granted for 5...

The story said that permission was granted for 5 million units. It might be that's a lifetime ceiling for what can be sold before having to request permission from the government to sell more.
Forum: Console Forum 20-Aug-2014, 19:50
Replies: 5,602
Views: 473,577
Posted By 3dilettante
With the prevalence of payola and other schemes...

With the prevalence of payola and other schemes to pay for exposure, there are possibilities where the labels already get something that they would endanger by litigating their claim.

Worst-case,...
Forum: Console Forum 20-Aug-2014, 19:10
Replies: 5,602
Views: 473,577
Posted By 3dilettante
At least for videos viewed within PSN, it would...

At least for videos viewed within PSN, it would be a secondary track that could be handled by Sony's own software, and could be stored in metadata other players could ignore if need be.
Alternately,...
Showing results 1 to 25 of 500

 
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