Sapphire HD 4890 Atomic Edition Review

ccokeman - May 3, 2009
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Specifications:

The only specifications we really know are the core's clock speed of 1000MHz, and the memory speed of 1020MHz I will leave you with what the stock card is capable of, and how it compares to the HD 4870.

GPU Type	HD 4870	HD 4890
Process	55nm	55nm
Transistors	956M	956M
Engine Clock (standard)	750MHz	850MHz
Stream Processors	800	800
Compute Performance	1.2 TFLOPs	1.36 TFLOPs
Texture Units	40	40
Texture Fillrate	30.0 GTexels/s	34.0 GTexels/s
ROPs	16	16
Pixel Fillrate	12.0 GPixels/s	13.6 GPixels/s
Z/Stencil	64	64
Z Fillrate	48.0 GSamples/s	54.4 GSamples/s
Memory Type	GDDR5	GDDR5
Memory Clock (standard)	900 MHz	975 MHz
Frame Buffer Size	512MB/1GB	1GB
Memory Data Rate	3.6 Gbps	3.9 Gbps
Memory Bus	256-bit	256-bit
Memory Bandwidth	115 GB/s	124.8 GB/s
Maximum Board Power	160 W	190 W
Idle Board Power	90W	60W

Features:

Microsoft DX10.1 Support
PCI Express 2.0 x16 bus interface
Dynamic geometry acceleration
Game physics processing capability
1GB/256-bit GDDR5 memory interface
Two integrated dual-link DVI display outputs
HDMI output support
Supports all display resolutions up to 1920x1080
Support via DVI-to-HDMI dongle
On chip HDCP Support
ATI CrossFireX™ multi-GPU support for highly scalable performance. (Use up to four discrete cards with an AMD 790FX based motherboard)
ATI Avivo HD Support
Accelerated Video Transcoding (AVT)
DVD Upscaling
Dynamic Contrast
Built-in HDMI with 7.1 surround sound support
Dynamic power management with ATI PowerPlay™ technology2
ATI Stream technology2
ATI Unified Video Decoder 2 (UVD) for Blu-ray™ and HD Video.