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GPU Comparison
AMD Radeon HD 6850 vs ATI Radeon HD 3850 X2
AMD Radeon HD 6850 vs ATI Radeon HD 3850 X2
VS
AMD Radeon HD 6850
ATI Radeon HD 3850 X2
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 and 512MB VRAM Radeon HD 3850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6850 's Advantages
Released 2 years and 6 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (128.0GB/s vs 52.99GB/s)
640 additional rendering cores
Lower TDP (127W vs 140W)
Score
Benchmark
FP32 (float)
Radeon HD 6850
+247%
1.488 TFLOPS
Radeon HD 3850 X2
0.428 TFLOPS
Radeon HD 6850
VS
Radeon HD 3850 X2
Graphics Card
Oct 2010
Release Date
Apr 2008
Northern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1000 MHz
Memory Clock
828 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
256bit
128.0GB/s
Bandwidth
52.99GB/s
Render Config
-
SM Count
-
12
Compute Units
4
960
Shading Units
320
48
TMUs
16
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
256 KB
Theoretical Performance
24.80 GPixel/s
Pixel Rate
10.70 GPixel/s
37.20 GTexel/s
Texture Rate
10.70 GTexel/s
-
FP16 (half)
-
1488 GFLOPS
FP32 (float)
428.2 GFLOPS
-
FP64 (double)
85.63 GFLOPS
Graphics Processor
Barts
GPU Name
RV670
Barts PRO (215-0798006)
GPU Variant
RV670 PRO (215-0708003)
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
55 nm
1.7 billion
Transistors
0.666 billion
255 mm²
Die Size
192 mm²
Board Design
127W
TDP
140W
300 W
Suggested PSU
300 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
2x DVI 1x S-Video
1x 6-pin
Power Connectors
-
Graphics Features
11.2 (11_0)
DirectX
10.1 (10_1)
4.4
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
N/A
Vulkan
N/A
-
CUDA
-
5.0
Shader Model
4.1
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