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GPU Comparison
AMD Radeon HD 7950 Boost vs ATI Radeon HD 4870 Mac Edition
AMD Radeon HD 7950 Boost vs ATI Radeon HD 4870 Mac Edition
VS
AMD Radeon HD 7950 Boost
ATI Radeon HD 4870 Mac Edition
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 Boost and 512MB VRAM Radeon HD 4870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7950 Boost 's Advantages
Released 3 years and 5 months late
Boost Clock925MHz
Larger VRAM bandwidth (240.0GB/s vs 108.8GB/s)
992 additional rendering cores
ATI Radeon HD 4870 Mac Edition 's Advantages
Lower TDP (150W vs 200W)
Score
Benchmark
FP32 (float)
Radeon HD 7950 Boost
+176%
3.315 TFLOPS
Radeon HD 4870 Mac Edition
1.2 TFLOPS
Radeon HD 7950 Boost
VS
Radeon HD 4870 Mac Edition
Graphics Card
Jun 2012
Release Date
Jan 2009
Southern Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
850 MHz
Base Clock
-
925 MHz
Boost Clock
-
1250 MHz
Memory Clock
850 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
240.0GB/s
Bandwidth
108.8GB/s
Render Config
-
SM Count
-
28
Compute Units
10
1792
Shading Units
800
112
TMUs
40
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
256 KB
Theoretical Performance
29.60 GPixel/s
Pixel Rate
12.00 GPixel/s
103.6 GTexel/s
Texture Rate
30.00 GTexel/s
-
FP16 (half)
-
3.315 TFLOPS
FP32 (float)
1200 GFLOPS
828.8 GFLOPS
FP64 (double)
240.0 GFLOPS
Graphics Processor
Tahiti
GPU Name
RV770
Tahiti PRO2 (215-0821282)
GPU Variant
RV770 XT Mac (215-0669080)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.956 billion
352 mm²
Die Size
256 mm²
Board Design
200W
TDP
150W
550 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x mini-DisplayPort 1.0
2x 6-pin
Power Connectors
2x 6-pin
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.1
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