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GPU Comparison
AMD Radeon HD 6990 vs NVIDIA GeForce GTX 555 OEM
AMD Radeon HD 6990 vs NVIDIA GeForce GTX 555 OEM
VS
AMD Radeon HD 6990
NVIDIA GeForce GTX 555 OEM
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 1024MB VRAM GeForce GTX 555 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6990 's Advantages
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (160.0GB/s vs 91.87GB/s)
1248 additional rendering cores
NVIDIA GeForce GTX 555 OEM 's Advantages
Lower TDP (150W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
+200%
2.55 TFLOPS
GeForce GTX 555 OEM
0.848 TFLOPS
Radeon HD 6990
VS
GeForce GTX 555 OEM
Graphics Card
Mar 2011
Release Date
May 2011
Northern Islands
Generation
GeForce 500
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1250 MHz
Memory Clock
957 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
192bit
160.0GB/s
Bandwidth
91.87GB/s
Render Config
-
SM Count
6
24
Compute Units
-
1536
Shading Units
288
96
TMUs
48
32
ROPs
24
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
64 KB (per SM)
512 KB
L2 Cache
384 KB
Theoretical Performance
26.56 GPixel/s
Pixel Rate
8.832 GPixel/s
79.68 GTexel/s
Texture Rate
35.33 GTexel/s
-
FP16 (half)
-
2.550 TFLOPS
FP32 (float)
847.9 GFLOPS
637.4 GFLOPS
FP64 (double)
70.66 GFLOPS
Graphics Processor
Antilles
GPU Name
GF114
Antilles XT (215-0807027)
GPU Variant
GF114-200-KB-A1
TeraScale 3
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
2.64 billion
Transistors
1.95 billion
389 mm²
Die Size
332 mm²
Board Design
375W
TDP
150W
750 W
Suggested PSU
450 W
1x DVI 4x mini-DisplayPort 1.2
Outputs
2x DVI 1x mini-HDMI 1.3a
2x 8-pin
Power Connectors
2x 6-pin
Graphics Features
11.2 (11_0)
DirectX
12 (11_0)
4.4
OpenGL
4.6
1.2
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
2.1
5.0
Shader Model
5.1
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