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GPU Comparison
AMD Radeon HD 8990 OEM vs NVIDIA GeForce GTX 645 OEM
AMD Radeon HD 8990 OEM vs NVIDIA GeForce GTX 645 OEM
VS
AMD Radeon HD 8990 OEM
NVIDIA GeForce GTX 645 OEM
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8990 OEM and 1024MB VRAM GeForce GTX 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 8990 OEM 's Advantages
Boost Clock1000MHz
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (288.0GB/s vs 64.00GB/s)
1472 additional rendering cores
NVIDIA GeForce GTX 645 OEM 's Advantages
Lower TDP (65W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 8990 OEM
+331%
4.096 TFLOPS
GeForce GTX 645 OEM
0.949 TFLOPS
Radeon HD 8990 OEM
VS
GeForce GTX 645 OEM
Graphics Card
Apr 2013
Release Date
Apr 2013
Sea Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
950 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1500 MHz
Memory Clock
1000 MHz
Memory
3GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
128bit
288.0GB/s
Bandwidth
64.00GB/s
Render Config
-
SM Count
-
32
Compute Units
-
2048
Shading Units
576
128
TMUs
48
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
768 KB
L2 Cache
256 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
9.888 GPixel/s
128.0 GTexel/s
Texture Rate
39.55 GTexel/s
-
FP16 (half)
-
4.096 TFLOPS
FP32 (float)
949.2 GFLOPS
1024 GFLOPS
FP64 (double)
39.55 GFLOPS
Graphics Processor
Malta
GPU Name
GK106
Malta XT (215-0849026)
GPU Variant
GK106-200-A1
GCN 1.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
2.54 billion
365 mm²
Die Size
221 mm²
Board Design
375W
TDP
65W
750 W
Suggested PSU
250 W
1x DVI 4x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 8-pin
Power Connectors
None
Graphics Features
12 (11_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.2
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
5.1
Shader Model
5.1
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