AMD Radeon R9 270 vs AMD Radeon R9 390X
GPU · Specs Compare
Graphics Card
Release Date
Nov 2013
Jun 2015
Generation
Volcanic Islands
Pirate Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
900 MHz
—
Boost Clock
925 MHz
—
Memory Clock
1400 MHz
1500 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
512bit
Bandwidth
179.2GB/s
384.0GB/s
Render Config
Compute Units
20
44
Shading Units
1280
2816
TMUs
80
176
ROPs
32
64
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Theoretical Performance
Pixel Rate
29.60 GPixel/s
67.20 GPixel/s
Texture Rate
74.00 GTexel/s
184.8 GTexel/s
FP32 (float)
2.368 TFLOPS
5.914 TFLOPS
FP64 (double)
148.0 GFLOPS
739.2 GFLOPS
Graphics Processor
GPU Name
Curacao
Grenada
GPU Variant
Curacao PRO(215-0848000)
Grenada XT(215-0880004)
Architecture
GCN 1.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
2.8 billion
6.2 billion
Die Size
212 mm²
438 mm²
Board Design
TDP
150W
275W
Suggested PSU
450 W
600 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
1.2
2.0
Vulkan
1.2
1.2
Shader Model
5.1
6.3
Benchmark
3DMark Time Spy
1,603
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▲ Specs Compare
Data sourced from official specifications and benchmark tests.