Radeon HD 6990 vs GeForce 9400 GT Rev. 3
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 128MB VRAM GeForce 9400 GT Rev. 3 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 6990 's Advantages
More VRAM (2GB vs 128GB)
Larger VRAM bandwidth (160.0GB/s vs 9.600GB/s)
1520 additional rendering cores
GeForce 9400 GT Rev. 3 's Advantages
Released 1 years and 3 months late
Lower TDP (50W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
+5566%
2550
GeForce 9400 GT Rev. 3
45
Graphics Card
Mar 2011
Release Date
Jun 2012
Northern Islands
Generation
GeForce 9
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1250 MHz
Memory Clock
600 MHz
Memory
2GB
Memory Size
128MB
GDDR5
Memory Type
DDR2
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
9.600GB/s
Render Config
24
Compute Units
-
-
SM Count
2
1536
Shading Units
16
96
TMUs
8
32
ROPs
4
8 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
32 KB
Theoretical Performance
26.56 GPixel/s
Pixel Rate
2.356 GPixel/s
79.68 GTexel/s
Texture Rate
4.712 GTexel/s
2.550 TFLOPS
FP32 (float)
44.86 GFLOPS
637.4 GFLOPS
FP64 (double)
-
Board Design
375W
TDP
50W
750 W
Suggested PSU
250 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x DVI
1x VGA
1x S-Video
2x 8-pin
Power Connectors
None
Graphics Processor
Antilles
GPU Name
GT218
Antilles XT
(215-0807027)
GPU Variant
GT218-670-B1
TeraScale 3
Architecture
Tesla 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
2.64 billion
Transistors
0.26 billion
389 mm²
Die Size
57 mm²
Graphics Features
11.2 (11_0)
DirectX
11.1 (10_1)
4.4
OpenGL
3.3
1.2
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
1.2
5.0
Shader Model
4.1