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GPU Comparison
AMD Radeon R9 390X vs AMD Radeon HD 6850
AMD Radeon R9 390X vs AMD Radeon HD 6850
VS
AMD Radeon R9 390X
AMD Radeon HD 6850
We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 1024MB VRAM Radeon HD 6850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 390X 's Advantages
Released 4 years and 8 months late
More VRAM (8GB vs 1GB)
Larger VRAM bandwidth (384.0GB/s vs 128.0GB/s)
1856 additional rendering cores
AMD Radeon HD 6850 's Advantages
Lower TDP (127W vs 275W)
Score
Benchmark
FP32 (float)
Radeon R9 390X
+297%
5.914 TFLOPS
Radeon HD 6850
1.488 TFLOPS
Radeon R9 390X
VS
Radeon HD 6850
Graphics Card
Jun 2015
Release Date
Oct 2010
Pirate Islands
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1500 MHz
Memory Clock
1000 MHz
Memory
8GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
512bit
Memory Bus
256bit
384.0GB/s
Bandwidth
128.0GB/s
Render Config
-
SM Count
-
44
Compute Units
12
2816
Shading Units
960
176
TMUs
48
64
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
1024 KB
L2 Cache
512 KB
Theoretical Performance
67.20 GPixel/s
Pixel Rate
24.80 GPixel/s
184.8 GTexel/s
Texture Rate
37.20 GTexel/s
-
FP16 (half)
-
5.914 TFLOPS
FP32 (float)
1488 GFLOPS
739.2 GFLOPS
FP64 (double)
-
Graphics Processor
Grenada
GPU Name
Barts
Grenada XT (215-0880004)
GPU Variant
Barts PRO (215-0798006)
GCN 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
6.2 billion
Transistors
1.7 billion
438 mm²
Die Size
255 mm²
Board Design
275W
TDP
127W
600 W
Suggested PSU
300 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin
Graphics Features
12 (12_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.0
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
6.3
Shader Model
5.0
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