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GPU Comparison
ATI Radeon HD 4870 vs AMD Radeon HD 7950 Boost
ATI Radeon HD 4870 vs AMD Radeon HD 7950 Boost
VS
ATI Radeon HD 4870
AMD Radeon HD 7950 Boost
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 3GB VRAM Radeon HD 7950 Boost to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 4870 's Advantages
Lower TDP (150W vs 200W)
AMD Radeon HD 7950 Boost 's Advantages
Released 4 years late
Boost Clock925MHz
Larger VRAM bandwidth (240.0GB/s vs 115.2GB/s)
992 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 4870
1.2 TFLOPS
Radeon HD 7950 Boost
+176%
3.315 TFLOPS
Radeon HD 4870
VS
Radeon HD 7950 Boost
Graphics Card
Jun 2008
Release Date
Jun 2012
Radeon R700
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
850 MHz
-
Boost Clock
925 MHz
900 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
115.2GB/s
Bandwidth
240.0GB/s
Render Config
-
SM Count
-
10
Compute Units
28
800
Shading Units
1792
40
TMUs
112
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
768 KB
Theoretical Performance
12.00 GPixel/s
Pixel Rate
29.60 GPixel/s
30.00 GTexel/s
Texture Rate
103.6 GTexel/s
-
FP16 (half)
-
1200 GFLOPS
FP32 (float)
3.315 TFLOPS
240.0 GFLOPS
FP64 (double)
828.8 GFLOPS
Graphics Processor
RV770
GPU Name
Tahiti
RV770 XT (215-0669049)
GPU Variant
Tahiti PRO2 (215-0821282)
TeraScale
Architecture
GCN 1.0
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.956 billion
Transistors
4.313 billion
256 mm²
Die Size
352 mm²
Board Design
150W
TDP
200W
450 W
Suggested PSU
550 W
2x DVI 1x S-Video
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
2x 6-pin
Power Connectors
2x 6-pin
Graphics Features
10.1 (10_1)
DirectX
12 (11_1)
3.3
OpenGL
4.6
1.1
OpenCL
1.2
N/A
Vulkan
1.2
-
CUDA
-
4.1
Shader Model
5.1
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