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GPU Comparison
AMD Radeon R9 285X vs AMD Radeon HD 7790
AMD Radeon R9 285X vs AMD Radeon HD 7790
VS
AMD Radeon R9 285X
AMD Radeon HD 7790
We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 285X and 1024MB VRAM Radeon HD 7790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 285X 's Advantages
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (264.0GB/s vs 96.00GB/s)
1152 additional rendering cores
AMD Radeon HD 7790 's Advantages
Lower TDP (85W vs 200W)
Score
Benchmark
FP32 (float)
Radeon R9 285X
+129%
4.104 TFLOPS
Radeon HD 7790
1.792 TFLOPS
Radeon R9 285X
VS
Radeon HD 7790
Graphics Card
Unknown
Release Date
Mar 2013
Volcanic Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1375 MHz
Memory Clock
1500 MHz
Memory
3GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
128bit
264.0GB/s
Bandwidth
96.00GB/s
Render Config
-
SM Count
-
32
Compute Units
14
2048
Shading Units
896
128
TMUs
56
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
256 KB
Theoretical Performance
32.06 GPixel/s
Pixel Rate
16.00 GPixel/s
128.3 GTexel/s
Texture Rate
56.00 GTexel/s
-
FP16 (half)
-
4.104 TFLOPS
FP32 (float)
1.792 TFLOPS
-
FP64 (double)
112.0 GFLOPS
Graphics Processor
Tonga
GPU Name
Bonaire
Tonga XT (215-0851313)
GPU Variant
Bonaire XT (215-0839039)
GCN 3.0
Architecture
GCN 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5 billion
Transistors
2.08 billion
366 mm²
Die Size
160 mm²
Board Design
200W
TDP
85W
550 W
Suggested PSU
250 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin
Graphics Features
12 (12_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.0
OpenCL
2.0
1.2
Vulkan
1.2
-
CUDA
-
6.3
Shader Model
6.3
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