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GPU Comparison
ATI Radeon HD 4870 Mac Edition vs ATI Radeon HD 3850 X2
ATI Radeon HD 4870 Mac Edition vs ATI Radeon HD 3850 X2
VS
ATI Radeon HD 4870 Mac Edition
ATI Radeon HD 3850 X2
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 512MB VRAM Radeon HD 3850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 4870 Mac Edition 's Advantages
Released 9 months late
Larger VRAM bandwidth (108.8GB/s vs 52.99GB/s)
480 additional rendering cores
ATI Radeon HD 3850 X2 's Advantages
Lower TDP (140W vs 150W)
Score
Benchmark
FP32 (float)
Radeon HD 4870 Mac Edition
+180%
1.2 TFLOPS
Radeon HD 3850 X2
0.428 TFLOPS
Radeon HD 4870 Mac Edition
VS
Radeon HD 3850 X2
Graphics Card
Jan 2009
Release Date
Apr 2008
Radeon R700
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
850 MHz
Memory Clock
828 MHz
Memory
512MB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
256bit
108.8GB/s
Bandwidth
52.99GB/s
Render Config
-
SM Count
-
10
Compute Units
4
800
Shading Units
320
40
TMUs
16
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
256 KB
L2 Cache
256 KB
Theoretical Performance
12.00 GPixel/s
Pixel Rate
10.70 GPixel/s
30.00 GTexel/s
Texture Rate
10.70 GTexel/s
-
FP16 (half)
-
1200 GFLOPS
FP32 (float)
428.2 GFLOPS
240.0 GFLOPS
FP64 (double)
85.63 GFLOPS
Graphics Processor
RV770
GPU Name
RV670
RV770 XT Mac (215-0669080)
GPU Variant
RV670 PRO (215-0708003)
TeraScale
Architecture
TeraScale
TSMC
Foundry
TSMC
55 nm
Process Size
55 nm
0.956 billion
Transistors
0.666 billion
256 mm²
Die Size
192 mm²
Board Design
150W
TDP
140W
450 W
Suggested PSU
300 W
1x DVI 1x mini-DisplayPort 1.0
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
-
Graphics Features
10.1 (10_1)
DirectX
10.1 (10_1)
3.3
OpenGL
3.3 (full) 4.0 (partial)
1.1
OpenCL
N/A
N/A
Vulkan
N/A
-
CUDA
-
4.1
Shader Model
4.1
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