NVIDIA GeForce GTX 490 vs AMD Radeon HD 7870 GHz Edition
We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 2GB VRAM Radeon HD 7870 GHz Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 490 's Advantages
Larger VRAM bandwidth (164.0GB/s vs 153.6GB/s)
AMD Radeon HD 7870 GHz Edition 's Advantages
More VRAM (2GB vs 1536GB)
800 additional rendering cores
Lower TDP (175W vs 365W)
Score
Benchmark
FP32 (float)
GeForce GTX 490
1.166 TFLOPS
Radeon HD 7870 GHz Edition
+119%
2.56 TFLOPS
Graphics Card
Unknown
Release Date
Mar 2012
GeForce 400
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
854 MHz
Memory Clock
1200 MHz
Memory
1536MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
164.0GB/s
Bandwidth
153.6GB/s
Render Config
-
Compute Units
20
15
SM Count
-
480
Shading Units
1280
60
TMUs
80
48
ROPs
32
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
18.24 GPixel/s
Pixel Rate
32.00 GPixel/s
36.48 GTexel/s
Texture Rate
80.00 GTexel/s
-
-
-
1166 GFLOPS
FP32 (float)
2.560 TFLOPS
145.8 GFLOPS
FP64 (double)
160.0 GFLOPS
Board Design
365W
TDP
175W
750 W
Suggested PSU
450 W
3x DVI
1x mini-DisplayPort
Outputs
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
2x 8-pin
Power Connectors
2x 6-pin
Graphics Processor
GF100
GPU Name
Pitcairn
GF100-375-A3
GPU Variant
Pitcairn XT
(215-0828047)
Fermi
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
3.1 billion
Transistors
2.8 billion
529 mm²
Die Size
212 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.1
OpenCL
1.2
N/A
Vulkan
1.2
2.0
CUDA
-
5.1
Shader Model
5.1
