AMD Radeon HD 6870 and HD 6850 confirmed to be launched on 22.10.2010

[Xoulz]

Because his game runs slower.

Oh, and cool ego dude.



HD5750's are now to be called HD6750, and HD5770's will be renamed to HD6770. It just adds on to the pile of misleading trash...


Okay, I give up.

I guess I wasn't satisfied with the high core clock combined with almost no increase in performance at the same price point. The fact that it saves a considerable amount of power over the 5-Series (and apparently GTX4xx) is great...

Old 6770 slide:


New Barts XT slide:


Note-

Barts XT: Core Clock has gone down 50 Mhz to 850 Mhz from 900, SP's were reduced from 1280 to 960, Texture Units reduced from 64 to 48, as well as board power going marginally up. Board power moves from 146w vs (greater than) >150w, ... Remember, the 5850's max board power is 151w.

Barts PRO: Core Clock is now listed at 700-725 Mhz (was 725), SP's were reduced from 1120 to 800, Texture Units dropped from 56 to 40, and board power went from 114w to (less than) <150w.

You guys have to realize that Barts XT has changed a bit recently.
The HD6770 listed in leaked slides has the card at 900 Mhz core, with 1280 Stream Processors, 64 texture units.

1 multiply+add "mad" (2 FP) ops per cycle * number of stream processors (1280) * core clock (900 Mhz) equals the 2.304 TFlops as that slide states.

This was the 6770, and it's specs are still worse than the "current" 5870. It's closer to the 5850 in performance. (Which is acceptable at a $250 price point.) Pay very close attention to the max board power for Barts XT on this slide. 146w.

The black slide I have above shows Barts XT as 850 Mhz core, with 960 Stream Processors, 48 texture units @ greater than 150w. Again, the 5850's max board power is 151w.
Those specs leave us with 1 multiply+add (2 FP) ops per cycle * number of stream processors (960) (which is cut down by 320 from 1280) * core clock (850 Mhz)
= 1.632 TFLops of Single Precision.

At a $260 price point, that leaves us with something between a 5770 and 5850. (Remember, 5850's can be had for $260 at this time.)

Performance wise (Single Precision only, and ONLY Single Precision) it is equal to a 5770 at 1020 Mhz.
HD5770 (Can be had for $135, or $125 w/ rebate on Newegg.com on Oct. 15 2010):
10 SIMD's
2 FP ops * 800 SP's * 850 Mhz Core Clock = 1.36 TFLops/s SP
40 Texture Units * 850 Mhz Core Clock = 34 GTexel/s
16 ROP's * 850 Mhz Core Clock = 13.6 GPixel/s
64 Z/Stencils * 850 Mhz Core Clock = 54.4 GSamples/s
1200 Mhz GDDR5 * 128 bit bus / 2 times = 76.8 GB/s
Max board power: 108w

Overclocked HD5770 @ 1020/1445 ($140 to $160 for voltage control):
10 SIMD's
2 FP ops * 800 SP's * 1020 Mhz Core Clock = 1.632 TFLops/s SP
40 Texture Units * 1020 Mhz Core Clock = 40.8 GTexel/s
16 ROP's * 1020 Mhz Core Clock = 16.32 GPixel/s
64 Z/Stencils * 1020 Mhz Core Clock = 65.28 GSamples/s
1200 Mhz GDDR5 * 128 bit bus / 2 times = 76.8 GB/s
Or for fun: 1445 Mhz GDDR5 * 128 bit bus / 2 times = 92.5 GB/s

HD6850 (Barts PRO) from black slide priced at $200 (?):
10 SIMD's
2 FP Ops * 800 SP's * 700-725 Mhz Core Clock = 1.12 TFLops SP to 1.16 TFLops SP
40 Texture Units * 700-725 Mhz Core Clock = 28 GTexel/s to 29 GTexel/s
32 ROP's * 700-725 Mhz Core Clock = 22.4 GPixel/s to 23.2 GPixel/s
128 Z/Stencils * 700-725 Mhz 89.6 GSamples/s to 92.8 GSamples/s
1000 Mhz GDDR5 * 256 bit bus / 2 times = 128 GB/s
Max board power: (less than) <150w

New HD6850 (Barts PRO) priced around $200 to $225:
10 SIMD's
2 FP Ops * 800 SP's * 775 Mhz Core Clock = 1.24 TFLops SP
40 Texture Units * 775 Mhz Core Clock = 31 GTexel/s
32 ROP's * 775 Mhz Core Clock = 24.8 GPixel/s
128 Z/Stencils * 775 Mhz = 99.2 GSamples/s
1000 Mhz GDDR5 (?) * 256 bit bus / 2 times = 128 GB/s
1200 Mhz GDDR5 (?) * 256 bit bus / 2 times = 153.6 GB/s (I doubt we will see this on a midrange card)

HD5850 (currently selling for $260 @ Newegg.com on Oct. 15 2010):
18 SIMD's
2 FP Ops * 1440 SP's * 725 Mhz Core Clock = 2.088 TFLops SP
72 Texture Units * 725 Mhz Core Clock = 52.2 GTexel/s
32 ROP's * 725 Mhz Core Clock = 23.2 GPixel/s
128 Z/Stencils * 725 Mhz Core Clock = 92.8 GSamples/s
1000 Mhz GDDR5 * 256 bit bus / 2 times = 128 GB/s.
Maximum Board Power = 151w

HD5850 Overclocked to 1000/1300
18 SIMD's
2 FP ops * 1440 SP's * 1000 Core Clock = 2.88 TFLops SP (note, this is nearly twice as fast as the stock 6870 below)
72 Texture Units * 1000 Core Clock = 72 GTexel/s
32 ROP's * 1000 Core Clock = 32 GPixel/s
128 Z/Stencils * 1000 Core Clock = 128 GSamples/s
1300 Mhz GDDR5 * 256 bit bus / 2 = 166.4 GB/s

HD6870 (Barts XT) from the black slide ($260?):
12 SIMD's
2 FP ops * 960 SP's * 850 Mhz Core Clock = 1.632 TFLops SP
48 Texture Units * 850 Mhz Core Clock = 40.8 GTexel/s
32 ROP's * 850 Mhz Core Clock = 27.2 GPixel/s
128 Z/Stencils (as noted on black chart) * 850 Mhz Core Clock = 108.8 GSamples/s
1050 Mhz GDDR5 * 256 bit bus / 2 = 134.4 GB/s
Max board power: (greater than) >150w

Theoretical HD6870 with completely insane overclock @ 1100/1450:
12 SIMD's
2 FP ops * 960 SP's * 1100 Mhz Core Clock = 2.112 TFLops SP
48 Texture Units * 1100 Mhz Core Clock = 42.8 GTexel/s
32 ROP's * 1100 Mhz Core Clock = 35.2 GPixel/s
128 Z/Stencils * 1100 Mhz Core Clock = 140.8 GSamples/s
1450 Mhz GDDR5 * 256 bit bus / 2 = 185.6 GB/s

HD5870 (currently selling for $350, as low as $310 with rebate on Newegg.com as of Oct. 15 2010):
20 SIMD's
2 FP ops * 1600 SP's * 850 Mhz Core Clock = 2.72 TFLops SP
80 Texture Units * 850 Mhz Core Clock = 68.0 GTexel/s
32 ROP's * 850 Mhz Core Clock = 27.2 GPixel/s
128 Z/Stencils * 850 Mhz Core Clock = 108.8 GSamples/s
1200 Mhz GDDR5 * 256 bit bus / 2 = 153.6 GB/s
Max board power: 188w

Overclocked 5870 @ 1000/1325 :
20 SIMD's
2 FP ops * 1600 SP's * 1000 Mhz Core Clock = 3.20 TFLops SP
80 Texture Units * 1000 Mhz Core Clock = 80.0 GTexel/s
32 ROP's * 1000 Mhz Core Clock = 32.0 GPixel/s
128 Z/Stencils * 1000 Mhz Core Clock = 128.0 GSamples/s
1325 Mhz GDDR5 * 256 bit bus / 2 = 169.7 GB/s

Also keep in mind that new Barts 6800 Series cards only feature one crossfire interconnect.

How does any of that jibberish^, bolster your arguement, that the GTX 460 is a better buy, than the 6000 series?