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GPU Comparison
ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 4580
ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 4580
VS
ATI Radeon HD 3870 Mac Edition
ATI Radeon HD 4580
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM Radeon HD 4580 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 3870 Mac Edition 's Advantages
Larger VRAM bandwidth (72.06GB/s vs 22.18GB/s)
200 additional rendering cores
ATI Radeon HD 4580 's Advantages
Released 3 years and 5 months late
Lower TDP (65W vs 106W)
Score
Benchmark
FP32 (float)
Radeon HD 3870 Mac Edition
+160%
0.497 TFLOPS
Radeon HD 4580
0.191 TFLOPS
Radeon HD 3870 Mac Edition
VS
Radeon HD 4580
Graphics Card
Jun 2008
Release Date
Nov 2011
Radeon R600
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1126 MHz
Memory Clock
693 MHz
Memory
512MB
Memory Size
512MB
GDDR4
Memory Type
GDDR3
256bit
Memory Bus
128bit
72.06GB/s
Bandwidth
22.18GB/s
Render Config
4
Compute Units
3
-
-
-
320
Shading Units
120
16
TMUs
8
16
ROPs
4
-
-
-
-
-
-
-
-
-
256 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
12.43 GPixel/s
Pixel Rate
3.184 GPixel/s
12.43 GTexel/s
Texture Rate
6.368 GTexel/s
-
-
-
497.3 GFLOPS
FP32 (float)
191.0 GFLOPS
99.46 GFLOPS
FP64 (double)
-
Board Design
106W
TDP
65W
300 W
Suggested PSU
250 W
2x DVI 1x S-Video
Outputs
2x DVI 1x S-Video
1x 6-pin
Power Connectors
None
Graphics Processor
RV670
GPU Name
RV635
RV670 XT (215-0708005)
GPU Variant
RV635 PRO (215-0682008)
TeraScale
Architecture
TeraScale
TSMC
Foundry
TSMC
55 nm
Process Size
55 nm
0.666 billion
Transistors
0.378 billion
192 mm²
Die Size
135 mm²
Graphics Features
10.1 (10_1)
DirectX
10.1 (10_1)
3.3 (full) 4.0 (partial)
OpenGL
3.3
N/A
OpenCL
N/A
N/A
Vulkan
N/A
-
-
-
4.1
Shader Model
4.1
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