NVIDIA GeForce GTX 490 vs ATI Radeon HD 4870 X2
We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 1024MB VRAM Radeon HD 4870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 490 's Advantages
More VRAM (1536GB vs 1024GB)
Larger VRAM bandwidth (164.0GB/s vs 115.2GB/s)
ATI Radeon HD 4870 X2 's Advantages
320 additional rendering cores
Lower TDP (286W vs 365W)
Score
Benchmark
FP32 (float)
GeForce GTX 490
1.166 TFLOPS
Radeon HD 4870 X2
+2%
1.2 TFLOPS
Graphics Card
Unknown
Release Date
Aug 2008
GeForce 400
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
854 MHz
Memory Clock
900 MHz
Memory
1536MB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
164.0GB/s
Bandwidth
115.2GB/s
Render Config
-
Compute Units
10
15
SM Count
-
480
Shading Units
800
60
TMUs
40
48
ROPs
16
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
18.24 GPixel/s
Pixel Rate
12.00 GPixel/s
36.48 GTexel/s
Texture Rate
30.00 GTexel/s
-
-
-
1166 GFLOPS
FP32 (float)
1200 GFLOPS
145.8 GFLOPS
FP64 (double)
240.0 GFLOPS
Board Design
365W
TDP
286W
750 W
Suggested PSU
600 W
3x DVI
1x mini-DisplayPort
Outputs
2x DVI
1x S-Video
2x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
GF100
GPU Name
R700
GF100-375-A3
GPU Variant
R700 XT
(215-0669045)
Fermi
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
3.1 billion
Transistors
0.956 billion
529 mm²
Die Size
256 mm²
Graphics Features
12 (11_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.1
OpenCL
1.1
N/A
Vulkan
N/A
2.0
CUDA
-
5.1
Shader Model
4.1
