NVIDIA GeForce GTX 490 vs AMD Radeon HD 7990
We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 490 's Advantages
Lower TDP (365W vs 375W)
AMD Radeon HD 7990 's Advantages
Boost Clock1000MHz
More VRAM (3GB vs 1536GB)
Larger VRAM bandwidth (288.0GB/s vs 164.0GB/s)
1568 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 490
1.166 TFLOPS
Radeon HD 7990
+251%
4.096 TFLOPS
Graphics Card
Unknown
Release Date
Apr 2013
GeForce 400
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
950 MHz
-
Boost Clock
1000 MHz
854 MHz
Memory Clock
1500 MHz
Memory
1536MB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
384bit
164.0GB/s
Bandwidth
288.0GB/s
Render Config
-
Compute Units
32
15
SM Count
-
480
Shading Units
2048
60
TMUs
128
48
ROPs
32
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
768 KB
-
-
-
Theoretical Performance
18.24 GPixel/s
Pixel Rate
32.00 GPixel/s
36.48 GTexel/s
Texture Rate
128.0 GTexel/s
-
-
-
1166 GFLOPS
FP32 (float)
4.096 TFLOPS
145.8 GFLOPS
FP64 (double)
1024 GFLOPS
Board Design
365W
TDP
375W
750 W
Suggested PSU
750 W
3x DVI
1x mini-DisplayPort
Outputs
1x DVI
4x mini-DisplayPort 1.2
2x 8-pin
Power Connectors
2x 8-pin
Graphics Processor
GF100
GPU Name
Malta
GF100-375-A3
GPU Variant
Malta XT
(215-0849026)
Fermi
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
3.1 billion
Transistors
4.313 billion
529 mm²
Die Size
365 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
