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Details of AMD's next generation Radeon hit the web

Newly created site Level 505 has leaked benchmarks and specifications of AMD’s upcoming ATI R600 graphics processor. The upcoming graphics processor is expected to launch in January 2007 with an expected revision arriving in March 2007. These early specifications and launch dates line up with what DailyTech has already published and are present on ATI internal roadmaps as of workweek 49.

Preliminary specifications from Level 505 of the ATI R600 are as follows:
  • 64 4-Way SIMD Unified Shaders, 128 Shader Operations/Cycle
  • 32 TMUs, 16 ROPs
  • 512 bit Memory Controller, full 32 bit per chip connection
  • GDDR3 at 900 MHz clock speed (January)
  • GDDR4 at 1.1 GHz clock speed (March, revised edition)
  • Total bandwidth 115 GB/s on GDDR3
  • Total bandwidth 140 GB/s on GDDR4
  • Consumer memory support 1024 MB
  • DX10 full compatibility with draft DX10.1 vendor-specific cap removal (unified programming)
  • 32FP [sic] internal processing
  • Hardware support for GPU clustering (any x^2 [sic] number, not limited to Dual or Quad-GPU)
  • Hardware DVI-HDCP support (High Definition Copy Protocol)
  • Hardware Quad-DVI output support (Limited to workstation editions)
  • 230W TDP PCI-SIG compliant
This time around it appears AMD is going for a different approach by equipping the ATI R600 with less unified shaders than NVIDIA’s recently launched GeForce 8800 GTX. However, the unified shaders found on the ATI R600 can complete more shader operations per clock cycle.

ATI's interal guidance states the R600 will have 320 stream processors at launch; 64 4-way unified shaders only accounts for 256 of these stream processors.

Level505 claims AMD is expected to equip the ATI R600 with GDDR3 and GDDR4 memory with the GDDR3 endowed model launching in January. Memory clocks have been set at 900 MHz for GDDR3 models and 1.1 GHz for GDDR4 models.  As recent as two weeks ago, ATI roadmaps had said this GDDR3 launch was canceled.  These same roadmaps claim the production date for R600 is February 2007, which would be after a January 22nd launch.

Memory bandwidth of the ATI R600 is significantly higher than NVIDIA’s GeForce 8800-series. Total memory bandwidth varies from 115GB/s on GDDR3 equipped models to 140GB/s on GDDR4 equipped models.

Other notable hardware features include hardware support for quad DVI outputs, but utilizing all four outputs are limited to FireGL workstation edition cards.

There’s also integrated support for multi-GPU clustering technologies such as CrossFire too. The implementation on the ATI R600 allows any amount ofATI R600 GPUs to operate together in powers of two. Expect multi-GPU configurations with greater than two GPUs to only be available for the workstation markets though.

The published results are very promising with AMD’s ATI R600 beating out NVIDIA’s GeForce 8800 GTX in most benchmarks. The performance delta varies from 8% up to 42% depending on the game benchmark.

When DailyTech contacted the site owner to get verification of the benchmarks, the owner replied that the benchmark screenshots could not be published due to origin-specific markers that would trace the card back to its source -- the author mentioned the card is part of the Microsoft Vista driver certification program.

If Level505's comments seem a little too pro-ATI, don't be too surprised.  When asked if the site was affiliated in any way to ATI or AMD, the owner replied to DailyTech with the statement that "two staff members of ours are directly affiliated with AMD's business [development] division."


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RE: Gforce 8900GTX
By EastCoast on 12/31/2006 1:01:37 PM , Rating: 0
Most of you guys are missing the obvious, the benchmarks are pure crap IMO. In some cases its no better then 8800 and worst then a 1950 in CF. The latter is more important for the fact that CF requires 2 6 pin plugs with all the heat you can handle. For a video card that requires 2 6 pin plugs (or whatever configuration they decide to use) those benchmarks are a debacle in my book. Why are you holding off on a 8800GTX? What series of benchmarks convienced you that the R600 is worth $+ more vs 8800 which is falling in price everyday the R600 is late to stores!!! I am no Nvidia fan and have never ownd a Nvidia card but this is the worst performance of a video card to date (requiring 2 plugs or whatever they decide to use).

This is nothing more then 1 step up from the 1950 which was 1 step up from the 1900 series which was a 1 1/2 step up from the x1800 series. Lets do the math, lets say $500 every step you make...that's a whopping $1500. Thinking you have the best when they come out with something that can do +/- 10 roughly FPS. Is this some sort of marketing ploy?


RE: Gforce 8900GTX
By nurbsenvi on 12/31/2006 2:43:33 PM , Rating: 2
ALL I care is price drop of DX10 Graphics cards.

Even with R600's medicore improvement over 8800 seris, just because it's throwing a good competition the price drop will accelerate.

And that's all that matters.

And these cards are DX10 cards!
That means I will be able to play Crysis and other DX10 games.

Forget about 1950 in CF being +8frame faster
it will not do DX10 special effects no matter what.

My next upgrade is due very soon and I set the goal at
UT2007 at 30fps at 1920x1200

And I won't be able to achive that within my budget if R600 didn't match G80 GPUs cuz it will keep the 8800 price high for longer period of time.

That's why 5fps matters.


RE: Gforce 8900GTX
By leexgx on 1/1/2007 11:59:31 AM , Rating: 2
the X1950 should use 2x PCI-E power plugs as it is useing more power then the Specs alow thats why you need an power supply that does not folow the Specs in atx 2.0 ? ot it auto shut down

nvidia have made the 8800 GTX with 2 plugs so that you do not need an crossfire PSU (the PSU would auto shut down with one PCI-E power connecter{max 20 amps per cable})


RE: Gforce 8900GTX
By Targon on 1/2/2007 7:54:44 AM , Rating: 2
Perhaps you missed the point about DirectX 10 support. We also don't know about how performance will be with a release version, not to mention drivers that don't have a ton of debug code in them(which slows down performance).

As for power, have you looked at how much power the 8800 draws?


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