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GPU Comparison
AMD Radeon R9 390 X2 vs AMD Radeon R9 270
AMD Radeon R9 390 X2 vs AMD Radeon R9 270
VS
AMD Radeon R9 390 X2
AMD Radeon R9 270
We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 X2 and 2GB VRAM Radeon R9 270 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 390 X2 's Advantages
Released 1 years and 10 months late
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (345.6GB/s vs 179.2GB/s)
1280 additional rendering cores
AMD Radeon R9 270 's Advantages
Boost Clock925MHz
Lower TDP (150W vs 580W)
Score
Benchmark
FP32 (float)
Radeon R9 390 X2
+116%
5.12 TFLOPS
Radeon R9 270
2.368 TFLOPS
Radeon R9 390 X2
VS
Radeon R9 270
Graphics Card
Sep 2015
Release Date
Nov 2013
Pirate Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
900 MHz
-
Boost Clock
925 MHz
1350 MHz
Memory Clock
1400 MHz
Memory
8GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
512bit
Memory Bus
256bit
345.6GB/s
Bandwidth
179.2GB/s
Render Config
-
SM Count
-
40
Compute Units
20
2560
Shading Units
1280
160
TMUs
80
64
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
512 KB
Theoretical Performance
64.00 GPixel/s
Pixel Rate
29.60 GPixel/s
160.0 GTexel/s
Texture Rate
74.00 GTexel/s
-
FP16 (half)
-
5.120 TFLOPS
FP32 (float)
2.368 TFLOPS
640.0 GFLOPS
FP64 (double)
148.0 GFLOPS
Graphics Processor
Grenada
GPU Name
Curacao
Grenada PRO (215-0880030)
GPU Variant
Curacao PRO (215-0848000)
GCN 2.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
6.2 billion
Transistors
2.8 billion
438 mm²
Die Size
212 mm²
Board Design
580W
TDP
150W
950 W
Suggested PSU
450 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
4x 8-pin
Power Connectors
1x 6-pin
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.0
OpenCL
1.2
1.2
Vulkan
1.2
-
CUDA
-
6.3
Shader Model
5.1
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