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GPU Comparison
ATI Radeon HD 4855 vs ATI Radeon HD 5850
ATI Radeon HD 4855 vs ATI Radeon HD 5850
VS
ATI Radeon HD 4855
ATI Radeon HD 5850
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4855 and 1024MB VRAM Radeon HD 5850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 4855 's Advantages
Lower TDP (110W vs 151W)
ATI Radeon HD 5850 's Advantages
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (128.0GB/s vs 115.2GB/s)
800 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 4855
0.736 TFLOPS
Radeon HD 5850
+183%
2.088 TFLOPS
Radeon HD 4855
VS
Radeon HD 5850
Graphics Card
Jan 2010
Release Date
Sep 2009
Radeon R700
Generation
Evergreen
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
900 MHz
Memory Clock
1000 MHz
Memory
512MB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
115.2GB/s
Bandwidth
128.0GB/s
Render Config
-
SM Count
-
8
Compute Units
18
640
Shading Units
1440
32
TMUs
72
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
512 KB
Theoretical Performance
9.200 GPixel/s
Pixel Rate
23.20 GPixel/s
18.40 GTexel/s
Texture Rate
52.20 GTexel/s
-
FP16 (half)
-
736.0 GFLOPS
FP32 (float)
2.088 TFLOPS
147.2 GFLOPS
FP64 (double)
417.6 GFLOPS
Graphics Processor
RV770
GPU Name
Cypress
RV770 PRO (215-0669065)
GPU Variant
Cypress PRO (215-0735043)
TeraScale
Architecture
TeraScale 2
TSMC
Foundry
TSMC
55 nm
Process Size
40 nm
0.956 billion
Transistors
2.154 billion
256 mm²
Die Size
334 mm²
Board Design
110W
TDP
151W
300 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.3a 1x VGA
Outputs
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
1x 6-pin
Power Connectors
2x 6-pin
Graphics Features
10.1 (10_1)
DirectX
11.2 (11_0)
3.3
OpenGL
4.4
1.1
OpenCL
1.2
N/A
Vulkan
N/A
-
CUDA
-
4.1
Shader Model
5.0
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