Present day fastest GDDR5 is (7 Gb/s) is over 2X faster than DDR4 (3.2 Gb/s); however, if I understand the stacking correctly, you could stack multiple DDR4 modules and they could share the same IO so you could get the same physical bus, but logically it would be wider. But that's years out I think. Interposer isn't that far off I think.
Predict: The Next Generation Console Tech
- Thread starter Acert93
- Start date
- Status
(((interference)))
Veteran
http://au.ign.com/articles/2012/04/04/sources-detail-the-playstation-4s-processing-specs
http://hexus.net/gaming/news/hardwa...bis-rumoured-feature-next-gen-amd-fusion-apu/
Was looking back at the rumours and it seems like it currently includes an APU
Assuming that's the case, and the current discrete GPUs are 6870/6950 for the 720 and a 7670 for the PS4, what are the flops of a HD 6550D?
http://hexus.net/gaming/news/hardwa...bis-rumoured-feature-next-gen-amd-fusion-apu/
Was looking back at the rumours and it seems like it currently includes an APU
Assuming that's the case, and the current discrete GPUs are 6870/6950 for the 720 and a 7670 for the PS4, what are the flops of a HD 6550D?
Well, a A8-3850 (6550D) was 400 shaders at 600 MHz (480 gigaflops) and the 7670 was rebrand of the 6670. 480 shaders at 800 MHz = 768 Gflops.
480 according to wikipedia.
So 770 + 480 = 1250 glops according to the out of date ign article.
But wouldn't you be looking at something in the order of 5Gbps given that exotic board design and exotic high bin memory are both probably unlikely to be implemented on a console? So overall if you can swing it DDR4 stacked sounds like a better solution than GDDR5 and the market production of the latter ought to outstrip the former very quickly and hence deliver cheap prices for the performance delivered.
If Durango's rumoured 8GB (64Gb) is true then they'd need 16 DDR4 chips to pull that off. If they are 16b chips then the overall bus width would be 256 bit and the overall bandwidth would be 51.2GB per second right? If they stacked the bandwidth would be the same except the packaging would be smaller?
COPS N RAPPERS
Regular
.......a 6550D is a basically the 5 series of architecture. they can do some games at 1360x768 @ 40 fps (settings at high) for metro 2033 about 15 to 20 fps at 720p (ultra settings). it's about 500 to 600 G-flops, half of a T-flop.
yeah, not too good...........an 8850 on the other hand.
wonder if the chips in these new consoles are on their final stages now of testing.
(((interference)))
Veteran
Hmm, well the vgleaks specs mention a 1.8 TFLOP GPU, which seems much more reasonable than the 7670 (or the other rumours suggesting a HD7970 which has 3.5 tflops)
http://www.vgleaks.com/world-exclusive-ps4-in-deep-first-specs/
So 1.8TF + 0.5 TF = ~2.3 TF for Orbis and for 720 we have either 2 TF (6870) or 2.25 (6950).
Looking pretty equal, maybe Orbis' graphics are 10% faster balanced out by 4 more cores and 2x the RAM on 720.
http://www.vgleaks.com/world-exclusive-ps4-in-deep-first-specs/
So 1.8TF + 0.5 TF = ~2.3 TF for Orbis and for 720 we have either 2 TF (6870) or 2.25 (6950).
Looking pretty equal, maybe Orbis' graphics are 10% faster balanced out by 4 more cores and 2x the RAM on 720.
COPS N RAPPERS
Regular
if those leaks are to be true we would expect xbox next to be $299 and ps4 to be $399. ($199 to $299 for a 6 series, $399 to $499 for a 7 series, and $499 to $599 for a 8 series, under 2013's price listings.)
By the beginning of next year i expect AMD's chip set prices to be cut severely to introduce the new entry and high-end levels for the year. according to the market, AMD is sinking like the titanic.
btw, the 6 series will be around 3 years old by 2013, so i doubt we'll see it in the next consoles.....unless they want to compete with the WII-U in price.
Yes, but think the max speed would be 100.4 GB per second. 256x3.2/8=100.4. However, I the press release for DDR4, it was mentioned that initially DDR4 will be only 2.133 Gbs. That would put the bandwidth of a 256bit bus around 68 GB/sec which is actaully really close to a 7770.
To your second point, I think that's how MS will try to reduce cost over the long term. Stacking may not be ready next year, but in 3-5 years, I bet they could use stacking to reduce the costs of the package. In theory, you could stack those 16 chips in just two 8 module stacks on one 32-bit physical bus. I doubt they'll be able to achieve that, but there's probably something in between that will happen.
What the hell is DX 11.5?
They were not actually that different, obviously you had a few things added for memexport and such but the biggest difference was just the interface was different.
Apart from that they were pretty much identical and difference were not as big as they were made out to be.
I love you.
Hey thanks for taking the time, it gives us a ball park of somewhere between say 70-100GB/s bandwidth for Durango.
Assuming they used an interposer they could fit say 4* Stacks of 4 DDR4 chips and that would be the ideal configuration, but there could be a problem with yields for the whole chip as they won't be able to test the DDR4 chips until they are attached to the interposer right?
Anything less than dedicated chip based on 78xx [or its more optimized 8xxx equivalent] will be disappointing.
itsmydamnation
Veteran
yes at 4ghz they are. but at 3.0ghz not so much, its the clock wall that they are running into. Also most 83XX seem to be undervolting at stock clocks quite happily.
2.3/3.2ghz 4 core with 384 VLIW4 shaders at 496/685 has a 35 WATT TDP, 3ghz 8 core piledriver would have to be chewing around 60watts. But wouldn't we all be expecting them to use steamroller?
There has also been conformation that the clock mesh stuff didn't make it into piledriver.
A10-4600m.
- Status
Similar threads
- Locked
