ATI Radeon HD 4890 vs NVIDIA GeForce GTX 285

Table of Contents

Graphics Processor

GPU model RV790 GT200B
GPU variant RV790 XT (215-0758016) G200-350-B3
Architecture TeraScale Tesla 2.0
Foundry TSMC TSMC
Manufacturing process 55 nm 55 nm
Number of transistors 959 million 1,400 million
Die size 282 mm² 470 mm²

Graphics Card

Release date Apr 2nd, 2009 Dec 23rd, 2008
Generation Radeon R700 GeForce 200
Production End-of-life End-of-life
Launch price 249 USD 359 USD
Interface PCIe 2.0 x16 PCIe 2.0 x16
Reviews 114 in our database 88 in our database
Predecessor Radeon R600 GeForce 9
Successor Evergreen GeForce 400

Clocks

GPU clock 850 MHz 648 MHz
Memory clock 975 MHz 3.9 Gbps effective 1242 MHz 2.5 Gbps effective
Shader clock 1476 MHz

Memory Configuration

Memory size 1024 MB 1024 MB
Memory type GDDR5 GDDR3
Memory bus width 256 bit 512 bit
Bandwidth 124.8 GB/s 159.0 GB/s

Render Configuration

Shading units 800 240
TMUs 40 80
ROPs 16 32
Compute units 10
Cache L1 16 KB (per CU)
Cache L2 256 KB 256 KB
SM count 30

Performance

Pixel rate 13.60 GPixel/s 20.74 GPixel/s
Texture rate 34.00 GTexel/s 51.84 GTexel/s
FP32 (float) performance 1,360 GFLOPS 708.5 GFLOPS
FP64 (double) performance 272.0 GFLOPS (1:5) 88.56 GFLOPS (1:8)

Dimensions & Outputs

Slot width Dual-slot Dual-slot
Length 241 mm 9.5 inches 267 mm 10.5 inches
Width 111 mm 4.4 inches
Height 40 mm 1.6 inches
TDP 190 W 204 W
Suggested PSU 450 W 550 W
Outputs 2x DVI1x S-Video 2x DVI1x S-Video
Power connectors 2x 6-pin 2x 6-pin
Board number B790-31 P892

API Support & Features

DirectX 10.1 (10_1) 11.1 (10_0)
OpenGL 3.3 3.3
OpenCL 1.1 1.1
Vulkan
Shader model 4.1 4.0
CUDA 1.3

Other Features

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