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GPU Comparison
AMD Radeon HD 7950 vs ATI Radeon HD 3850
AMD Radeon HD 7950 vs ATI Radeon HD 3850
VS
AMD Radeon HD 7950
ATI Radeon HD 3850
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 and 512MB VRAM Radeon HD 3850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7950 's Advantages
Released 4 years and 2 months late
Larger VRAM bandwidth (240.0GB/s vs 53.12GB/s)
1472 additional rendering cores
ATI Radeon HD 3850 's Advantages
Lower TDP (75W vs 200W)
Score
Benchmark
FP32 (float)
Radeon HD 7950
+569%
2.867 TFLOPS
Radeon HD 3850
0.428 TFLOPS
Radeon HD 7950
VS
Radeon HD 3850
Graphics Card
Jan 2012
Release Date
Nov 2007
Southern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1250 MHz
Memory Clock
830 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
256bit
240.0GB/s
Bandwidth
53.12GB/s
Render Config
-
SM Count
-
28
Compute Units
4
1792
Shading Units
320
112
TMUs
16
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
256 KB
Theoretical Performance
25.60 GPixel/s
Pixel Rate
10.69 GPixel/s
89.60 GTexel/s
Texture Rate
10.69 GTexel/s
-
FP16 (half)
-
2.867 TFLOPS
FP32 (float)
427.5 GFLOPS
716.8 GFLOPS
FP64 (double)
85.50 GFLOPS
Graphics Processor
Tahiti
GPU Name
RV670
Tahiti PRO (215-0821056)
GPU Variant
RV670 PRO (215-0708003)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.666 billion
352 mm²
Die Size
192 mm²
Board Design
200W
TDP
75W
550 W
Suggested PSU
250 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
1x 6-pin
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.1
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