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GPU Comparison
ATI Radeon HD 3870 Mac Edition vs AMD Radeon HD 6450 OEM
ATI Radeon HD 3870 Mac Edition vs AMD Radeon HD 6450 OEM
VS
ATI Radeon HD 3870 Mac Edition
AMD Radeon HD 6450 OEM
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM Radeon HD 6450 OEM 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 8.528GB/s)
160 additional rendering cores
AMD Radeon HD 6450 OEM 's Advantages
Released 2 years and 8 months late
Lower TDP (18W vs 106W)
Score
Benchmark
FP32 (float)
Radeon HD 3870 Mac Edition
+148%
0.497 TFLOPS
Radeon HD 6450 OEM
0.2 TFLOPS
Radeon HD 3870 Mac Edition
VS
Radeon HD 6450 OEM
Graphics Card
Jun 2008
Release Date
Feb 2011
Radeon R600
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
1126 MHz
Memory Clock
533 MHz
Memory
512MB
Memory Size
512MB
GDDR4
Memory Type
GDDR3
256bit
Memory Bus
64bit
72.06GB/s
Bandwidth
8.528GB/s
Render Config
4
Compute Units
2
-
-
-
320
Shading Units
160
16
TMUs
8
16
ROPs
4
-
-
-
-
-
-
-
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
128 KB
-
-
-
Theoretical Performance
12.43 GPixel/s
Pixel Rate
2.500 GPixel/s
12.43 GTexel/s
Texture Rate
5.000 GTexel/s
-
-
-
497.3 GFLOPS
FP32 (float)
200.0 GFLOPS
99.46 GFLOPS
FP64 (double)
-
Board Design
106W
TDP
18W
300 W
Suggested PSU
200 W
2x DVI 1x S-Video
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
1x 6-pin
Power Connectors
None
Graphics Processor
RV670
GPU Name
Caicos
RV670 XT (215-0708005)
GPU Variant
Junbonator
TeraScale
Architecture
TeraScale 2
TSMC
Foundry
TSMC
55 nm
Process Size
40 nm
0.666 billion
Transistors
0.37 billion
192 mm²
Die Size
67 mm²
Graphics Features
10.1 (10_1)
DirectX
11.2 (11_0)
3.3 (full) 4.0 (partial)
OpenGL
4.4
N/A
OpenCL
1.2
N/A
Vulkan
N/A
-
-
-
4.1
Shader Model
5.0
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