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GPU Comparison
AMD Radeon HD 7970 vs AMD Radeon HD 6450 OEM
AMD Radeon HD 7970 vs AMD Radeon HD 6450 OEM
VS
AMD Radeon HD 7970
AMD Radeon HD 6450 OEM
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 512MB VRAM Radeon HD 6450 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7970 's Advantages
Released 10 months late
Larger VRAM bandwidth (264.0GB/s vs 8.528GB/s)
1888 additional rendering cores
AMD Radeon HD 6450 OEM 's Advantages
Lower TDP (18W vs 250W)
Score
Benchmark
FP32 (float)
Radeon HD 7970
+1794%
3.789 TFLOPS
Radeon HD 6450 OEM
0.2 TFLOPS
Radeon HD 7970
VS
Radeon HD 6450 OEM
Graphics Card
Dec 2011
Release Date
Feb 2011
Southern Islands
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1375 MHz
Memory Clock
533 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
64bit
264.0GB/s
Bandwidth
8.528GB/s
Render Config
-
SM Count
-
32
Compute Units
2
2048
Shading Units
160
128
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
768 KB
L2 Cache
128 KB
Theoretical Performance
29.60 GPixel/s
Pixel Rate
2.500 GPixel/s
118.4 GTexel/s
Texture Rate
5.000 GTexel/s
-
FP16 (half)
-
3.789 TFLOPS
FP32 (float)
200.0 GFLOPS
947.2 GFLOPS
FP64 (double)
-
Graphics Processor
Tahiti
GPU Name
Caicos
Tahiti XT (215-0821060)
GPU Variant
Junbonator
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
4.313 billion
Transistors
0.37 billion
352 mm²
Die Size
67 mm²
Board Design
250W
TDP
18W
600 W
Suggested PSU
200 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
1x 6-pin + 1x 8-pin
Power Connectors
None
Graphics Features
12 (11_1)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.2
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
5.0
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