Monday, September 17th 2012
AMD "Oland" Radeon HD 8800 Series SKUs Unveiled
Apparently, launch of AMD's Radeon HD 8800 series is close enough for some sources to come up with specifications. The HD 8800 series, according to one source, is based on a new silicon codenamed "Oland," which is built on the 28 nm process, packing 3.4 billion transistors with around 270 mm² die-area. According to the source, the two HD 8800 series models, the HD 8870 "Oland XT" will up performance per Watt and cost-performance ratios over current HD 7800 series, while maintaining current process technologies.
The Radeon HD 8870, according to numbers provided by the source, could offer performance comparable to today's high-end GPUs. The HD 8870 is clocked at 1050 MHz with 1100 MHz PowerTune Boost frequency; while the HD 8850 is clocked at 925 MHz with 975 MHz boost frequency. The memory of both SKUs is clocked at 6.00 GHz, yielding 192 GB/s memory bandwidth. The chips hence have 256-bit wide memory interfaces.
Key details such as stream processor, TMU, and ROP counts are excluded, though the source mentions that the HD 8870 provides up to 75% higher single-precision floating point and up to 60% higher double-precision floating point performance over its prdecessor, the HD 7870. The texture fill-rate is up by 65%. The Radeon HD 8850 offers similar increases over its predecessor, the HD 7850. Find them tabled above.
Sources:
Read2ch, VideoCardz
The Radeon HD 8870, according to numbers provided by the source, could offer performance comparable to today's high-end GPUs. The HD 8870 is clocked at 1050 MHz with 1100 MHz PowerTune Boost frequency; while the HD 8850 is clocked at 925 MHz with 975 MHz boost frequency. The memory of both SKUs is clocked at 6.00 GHz, yielding 192 GB/s memory bandwidth. The chips hence have 256-bit wide memory interfaces.
93 Comments on AMD "Oland" Radeon HD 8800 Series SKUs Unveiled
PS4 & XB3 => ~7870/670
:o
PS4 about the same, also AMD based, maybe Fusion/
Both far from HD7870's level anyway.
Wii U has 400-480 ALUs
5670 -> 400 ALUs @ .775 MHz @ 40-nm
6670 -> 480 ALUs @ .8 MHz @ 40-nm
Wii U -> 400-480 @ 1.0+ GHz @ 32-nm <-- H2 2012
XBX/PS4 -> 1120-1344 GCN/Kepler @ 1.0+ GHz @ 28-nm <-- H2 2013 - H1 2014
Playstation 4 -> APU monolithic silicon (AMD²)
Xbox 3 -> APU interposer (AMD + Nvidia)
I dont care how often they produce a new set of cards, I just want the new series to be more relevant, not just marketing.
A great example is the 5xxx to 6xxx series, where improvements were only efficiency.
Anyway, does this mean there will be no 76xx cards?
but this is a Q1.13 launch ... so up to 6 month wait.
btw if AMD really did comes out with 8800 series before 8900 series it could mean they get very nice competition from nvidia
I'd love to see it come before Christmas buying season and I believe they could... that would put Nvidia in the corner wearing the pointy hat!
1536 Cores (@ 2prim per clock) x 975MHz = 2.995200 TFLOPS
-------------------------------x 925MHz = 2.841600 TFLOPS
96 TMU x 975 MHz = 93.6 GT/s
---------x 925MHz = 88.8 GT/s
32 ROP x 975 MHz = 31.2 GP/s
--------x 925 MHz = 21.3 GP/s
8870 may have:
1790-1792~Cores x 1050MHz = 3.759 - 3.763 TFLOPS old 7950@800MHz is at 2.867
112 TMU = 117,6 GT/s
32 ROP = 33,6 GP/s
It may be true, and obviously I expect it more-or-less to will be, but yeah.
Things to consider:
*Should perform like 7950 and 7970 ghz ed at stock (if not memory constrained), 8850 10% better than 7870 overall.
*Makes a lot more sense priced at 259-269/359-369 (660ti/670), because amd has been shown to really like those approx. prices at launch.
*1792sp would be bandwidth constrained with 6gbps/256-bit at around 900mhz (obviously one can overclock and the gtx600 series shows how far 6ghz ram can go)
*8850 should have one power connector and in theory could hit similar clocks to stock 8870 within 150w, perform similar to 660ti.
*die size sounds exactly what I figured it would be, as does TDP.
The two things that don't compute are the ram/shader setup and the price. Either AMD expects people to understand they will need to overclock the ram, the specs are wrong, or amd is short-sighting themselves (which benefits us).
Since GK110 is already shipping for revenue, I'd suspect that the rumour mills will already be touting the GTX 780's (?) performance around the time that the Sea Islands starts making its own appearance. If -as suspected, the large die GK 110 takes the GPU crown, then it isn't beyond the realms of possibility that Nvidia still sell large numbers of x50/x60 parts based on the cachet of the top part...even if the top part is in very short supply and drip-fed into the channel. Not as if there isn't ample precedent
* At least the GPU pointy hat gets passed back and forth...pity AMD have the CPU version as a permanent addition to their wardrobe.