ATI/AMD Radeon 4000 HD

In yesterday's news on upcoming ATI RV740 graphics chip, we have no details yet. This was one of our readers apparently disrupted and he gave us anonymous authentic-looking images of a presentation probably in June next HD Radeon 4000 series of AMD to you. We unfortunately have no way to verify this information, but interesting to read them in any case.

Accordingly, the graphics chips of the Radeon 4000 HD continues to 55nm production technology and DirectX 10.1. The number of shader units but magnified, anti-aliasing will be accelerated and it is already partially GDDR5. With Power Play + ", the electricity consumption at no load below 20 watts, even with the fast and expensive graphics cards.

The new high-end model is the ATI Radeon 4870 HD X2 (R700XT). Like the Radeon 3870 HD X2 are two (RV770) graphics chips on one board. With over 2 TeraFLOPS (FLOPS = Gleitkommaoperationen per second), this graphics card is theoretically four times faster than a Radeon HD 3870th Radeon HD 4870 X2HD X2 Radeon 4870 graphics card with 1 or 2 Gbyte GDDR5 memory and should consume approximately 250 watts. There will be a chip clock of 1050 MHz and a memory clock of 1800 MHz.

Successor of HD Radeon 3850 and 3870 (RV670), HD Radeon 4850 and 4870 (RV770). The memory interface remains 256bit and ROPs (raster Opera Tons) at 16, but the number of stream processors (shader units) will be from 320 to 480 and a decrease in Texture Mapping Units (TMUs) by 16 to 32 doubled. The power saving technology is to be "idle" less than 10 watts consumed.
The Radeon 4870 should HD with 1024 Mbytes memory and is equipped with 1050/2200 MHz run. The power consumption is under load with 150 watts. The Radeon 4850 HD taktet with 850/1800 MHz, on the other hand, has 512 Mbytes GDDR5 and consumes about 120 watts.

The RV740 forms the basis of the mainstream Radeon graphics cards HD 4650 and the 4670th The graphics chip has 240 Stream Processors, 12 ROPs, 24 TMUs and a 256bit memory interface - twice as wide as usual, otherwise the price range under 120 euros.
The HD Radeon 4670 with 512 MB GDDR4 memory taktet well with 1000/1200 MHz and consumes about 100 watts. The Radeon 4850 HD, however, equipped with 256 MB and runs with 800/1000 MHz.

In the low-end or entry-range plans AMD the Radeon 4450 and 4470 HD with RV710 graphics chip. The specifications are 40 shader units, 4 ROPs, 8 TMUs and a 128bit memory interface. Supports GDDR3 memory and DDR2. The power consumption will no load less than 5 watts. 30 Watt (4450) sein. The 3D-operation should be 50 watts (4470) or 30 watts (4450).
The Radeon 4470 HD taktet with 900/800 MHz and has 256 MB of GDDR3 memory. The Radeon 4450 HD must be opposed with 128 Mbyte DDR2 SDRAM and runs shortfall expected to 700/500 MHz.

The following table provides an overview of the upcoming Radeon graphics cards of the HD 4000 series.

Radeon Radeon	Shader Shader	RAM RAM	RAM-Bus RAM bus	Takt (MHz) Stroke (MHz)	TDP TDP
HD 4870 X2 HD 4870 X2	2x 480 2x 480	1024MB GDDR5 1024MB GDDR5	2x 256bit 2x 256bit	1050/1800 1050/1800	250W 250W
HD 4870 HD 4870	480 480	1024MB GDDR5 1024MB GDDR5	256bit 256bit	1050/2200 1050/2200	150W 150W
HD 4850 HD 4850	480 480	512MB GDDR5 512MB GDDR5	256bit 256bit	850/1800 850/1800	120W 120W
HD 4670 HD 4670	240 240	512MB GDDR4 512MB GDDR4	256bit 256bit	1000/1200 1000/1200	100W 100W
HD 4650 HD 4650	240 240	256MB GDDR4 256MB GDDR4	256bit 256bit	800/1000 800/1000	80W 80W
HD 4470 HD 4470	40 40	256MB GDDR3 256MB GDDR3	128bit 128bit	900/800 900/800	50W 50W
HD 4450 HD 4450	40 40	128MB DDR2 128MB DDR2	128bit 128bit	700/500 700/500	30W 30W

AMD stresses in the underlying documents also the theoretical computing power of the new graphics cards or chips. The following table provides information about:

Radeon Radeon	Stream Stream Prozessoren (SP) Processors (SP)	FLOPS FLOPS pro SP Per SP	Chiptakt Chip stroke	Rechen- Computing leistung Performance
HD 4870 X2 HD 4870 X2	2x 480 2x 480	2 2	1050 MHz 1050 MHz	2016 GigaFLOPS 2016 GigaFLOPS
HD 4870 HD 4870	480 480	2 2	1050 MHz 1050 MHz	1008 GigaFLOPS 1008 GigaFLOPS
HD 4850 HD 4850	480 480	2 2	850 MHz 850 MHz	816 GigaFLOPS 816 GigaFLOPS
HD 4670 HD 4670	240 240	2 2	1000 MHz 1000 MHz	480 GigaFLOPS 480 GigaFLOPS
HD 4650 HD 4650	240 240	2 2	800 MHz 800 MHz	384 GigaFLOPS 384 GigaFLOPS
HD 3870 HD 3870	320 320	2 2	775 MHz 775 MHz	496 GigaFLOPS 496 GigaFLOPS

As mentioned, this information is not official and therefore with caution. Up to the expected introduction of HD ATI Radeon 4000 series in June, it is still for a while, so that the details can change anything.