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GPU Comparison
AMD Radeon RX 580 vs AMD Radeon HD 6850 X2
AMD Radeon RX 580 vs AMD Radeon HD 6850 X2
VS
AMD Radeon RX 580
AMD Radeon HD 6850 X2
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580 and 2GB VRAM Radeon HD 6850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 580 's Advantages
Released 5 years and 7 months late
Boost Clock1340MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 134.4GB/s)
1344 additional rendering cores
Lower TDP (185W vs 254W)
Score
Benchmark
FP32 (float)
Radeon RX 580
+302%
6.175 TFLOPS
Radeon HD 6850 X2
1.536 TFLOPS
Radeon RX 580
VS
Radeon HD 6850 X2
Graphics Card
Apr 2017
Release Date
Sep 2011
Polaris
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1257 MHz
Base Clock
-
1340 MHz
Boost Clock
-
2000 MHz
Memory Clock
1050 MHz
Memory
8GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
256.0GB/s
Bandwidth
134.4GB/s
Render Config
-
SM Count
-
36
Compute Units
12
2304
Shading Units
960
144
TMUs
48
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
2 MB
L2 Cache
512 KB
Theoretical Performance
42.88 GPixel/s
Pixel Rate
25.60 GPixel/s
193.0 GTexel/s
Texture Rate
38.40 GTexel/s
6.175 TFLOPS
FP16 (half)
-
6.175 TFLOPS
FP32 (float)
1.536 TFLOPS
385.9 GFLOPS
FP64 (double)
-
Graphics Processor
Polaris 20
GPU Name
Barts
Polaris 20 XTX (215-0910038)
GPU Variant
Barts PRO (215-0798006)
GCN 4.0
Architecture
TeraScale 2
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
40 nm
5.7 billion
Transistors
1.7 billion
232 mm²
Die Size
255 mm²
Board Design
185W
TDP
254W
450 W
Suggested PSU
600 W
1x HDMI 2.0b 3x DisplayPort 1.4a
Outputs
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
1x 8-pin
Power Connectors
2x 8-pin
Graphics Features
12 (12_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
6.4
Shader Model
5.0
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