Monday, September 27th 2010
AMD Radeon HD 6700 Series ''Barts'' Specs Sheet Surfaces
Here is the slide we've been waiting for, the specs sheet of AMD's next-generation Radeon HD 6700 series GPUs, based on a new, radically redesigned core, codenamed "Barts". The XT variant denotes Radeon HD 6770, and Pro denotes HD 6750. AMD claims that the HD 6700 series will pack "Twice the Horsepower", over previous generation HD 5700 series. Compared to the "Juniper" die that went into making the Radeon HD 5700 series, Barts features twice the memory bandwidth thanks to its 256-bit wide high-speed memory interface, key components such as the SIMD arrays split into two blocks (like on Cypress), and we're now getting to learn that it uses a more efficient 4-D stream processor design. There are 1280 stream processors available to the HD 6770 (Barts XT), and 1120 stream processors to the HD 6750 (Barts Pro). Both SKUs use the full 256-bit memory bus width.
The most interesting specification here is the shader compute power. Barts XT churns out 2.3 TFLOP/s with 1280 stream processors, GPU clocked at 900 MHz, while the Radeon HD 5870 manages 2.72 TFLOP/s with 1600 stream processors, 850 MHz. So indeed the redesigned SIMD core is working its magic. Z/Stencil performance also shot up more than 100% over the Radeon HD 5700 series. Both the HD 6770 and HD 6750 will be equipped with 5 GT/s memory chips, at least on the reference-design cards, which are technically capable of running at 1250 MHz (5 GHz effective), though are clocked at 1050 MHz (4.20 GHz effective) on HD 6770, and 1000 MHz (4 GHz effective) on HD 6750. Although these design changes will inevitably result in a larger die compared to Juniper, it could still be smaller than Cypress, and hence, more energy-efficient.
Source:
PCinLife
The most interesting specification here is the shader compute power. Barts XT churns out 2.3 TFLOP/s with 1280 stream processors, GPU clocked at 900 MHz, while the Radeon HD 5870 manages 2.72 TFLOP/s with 1600 stream processors, 850 MHz. So indeed the redesigned SIMD core is working its magic. Z/Stencil performance also shot up more than 100% over the Radeon HD 5700 series. Both the HD 6770 and HD 6750 will be equipped with 5 GT/s memory chips, at least on the reference-design cards, which are technically capable of running at 1250 MHz (5 GHz effective), though are clocked at 1050 MHz (4.20 GHz effective) on HD 6770, and 1000 MHz (4 GHz effective) on HD 6750. Although these design changes will inevitably result in a larger die compared to Juniper, it could still be smaller than Cypress, and hence, more energy-efficient.
245 Comments on AMD Radeon HD 6700 Series ''Barts'' Specs Sheet Surfaces
Any more news about barts?
Did you get that? 5970 supported Crossfire Eyefinity, but no other Crossfire config supported Eyefinity. Should give you an idea of how truly poor these drivers are...
I dropped back to one card, and one monitor, and barely have any issues. I'm still left with a card that overheats when it's 30c in the room, but I RMA'd one card, and maybe that will fix all my problems...but I am not confident it will, as I still get cursor curruption with Eyefinity and DP monitors. If I take out all the add=ons this gen has in comparison to 4-series, the cards work GREAT!. :shadedshuNope. With ~2 weeks left before NDA expires, I don't tihnk we'll hear very much. Reviewers for launch should have already received cards, so NDAs are tight on info right now.
What we need is pictures of retail card, heatsink, etc...should go a long way. Of course, this assumes that the OCT 18th date is correct....
Experiences like CaDaveCa's leave a bad taste in my mouth though.
But like I said...originally it was 5970's only for my chosen monitor config, and maybe if I had chosen better in my purchases, I'd not have so many issues. In the end, I was hoping for tri-fire Eyefinity...one gpu per monitor...if one card works well @ 1920x1080 and 8xAA, then 3 should be ideal, right?
:shadedshu
:D
If the 6-series will do Eyefinity right, I'm gonna get 3x 40-inch LCD TVs for it. I was looking last night while shopping for a microwave, and I can get some decent panels for ~$700 locally. I even ahve the wife's approval...
But that damn corrupting cursor issue has got to stop. And I know for sure I'm not the only one with the problem, as it's in the release notes. Thats' a deal-breaker for me.
having said that, with the single 5850 I have had no issues whatsoever period.
Lucky. :p
Source: Chiphell/HeavenPR
NEW
:D
:rockout: