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GPU Comparison
AMD Radeon HD 6790 vs AMD Radeon HD 7850
AMD Radeon HD 6790 vs AMD Radeon HD 7850
VS
AMD Radeon HD 6790
AMD Radeon HD 7850
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6790 and 2GB VRAM Radeon HD 7850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7850 's Advantages
Released 11 months late
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (153.6GB/s vs 134.4GB/s)
224 additional rendering cores
Lower TDP (130W vs 150W)
Score
Benchmark
FP32 (float)
Radeon HD 6790
1.344 TFLOPS
Radeon HD 7850
+31%
1.761 TFLOPS
Radeon HD 6790
VS
Radeon HD 7850
Graphics Card
Apr 2011
Release Date
Mar 2012
Northern Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1050 MHz
Memory Clock
1200 MHz
Memory
1024MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
134.4GB/s
Bandwidth
153.6GB/s
Render Config
-
SM Count
-
10
Compute Units
16
800
Shading Units
1024
40
TMUs
64
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
512 KB
Theoretical Performance
13.44 GPixel/s
Pixel Rate
27.52 GPixel/s
33.60 GTexel/s
Texture Rate
55.04 GTexel/s
-
FP16 (half)
-
1344 GFLOPS
FP32 (float)
1.761 TFLOPS
-
FP64 (double)
110.1 GFLOPS
Graphics Processor
Barts
GPU Name
Pitcairn
Barts LE (215-0798002)
GPU Variant
Pitcairn PRO (215-0828062)
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
1.7 billion
Transistors
2.8 billion
255 mm²
Die Size
212 mm²
Board Design
150W
TDP
130W
450 W
Suggested PSU
300 W
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
2x 6-pin
Power Connectors
1x 6-pin
Graphics Features
11.2 (11_0)
DirectX
12 (11_1)
4.4
OpenGL
4.6
1.2
OpenCL
1.2
N/A
Vulkan
1.2
-
CUDA
-
5.0
Shader Model
5.1
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