Radeon RX 580 OEM vs Radeon R9 255 OEM
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580 OEM and 2GB VRAM Radeon R9 255 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 580 OEM Advantages
Released 2 years and 6 months late
Boost Clock has increased by 36% (1266MHz vs 930MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 73.60GB/s)
1792 additional rendering cores
Radeon R9 255 OEM Advantages
Lower TDP (65W vs 150W)
Score
Benchmark
FP32 (float)
Radeon RX 580 OEM
+512%
5834
Radeon R9 255 OEM
952
Graphics Card
Jun 2016
Release Date
Dec 2013
Polaris
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1120 MHz
Base Clock
900 MHz
1266 MHz
Boost Clock
930 MHz
2000 MHz
Memory Clock
1150 MHz
Memory
8GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
256.0GB/s
Bandwidth
73.60GB/s
Render Config
36
Compute Units
8
2304
Shading Units
512
144
TMUs
32
32
ROPs
16
16 KB (per CU)
L1 Cache
16 KB (per CU)
2 MB
L2 Cache
256 KB
Theoretical Performance
40.51 GPixel/s
Pixel Rate
14.88 GPixel/s
182.3 GTexel/s
Texture Rate
29.76 GTexel/s
5.834 TFLOPS
FP16 (half)
-
5.834 TFLOPS
FP32 (float)
952.3 GFLOPS
364.6 GFLOPS
FP64 (double)
59.52 GFLOPS
Board Design
150W
TDP
65W
450 W
Suggested PSU
250 W
1x HDMI 2.0b
3x DisplayPort 1.4a
3x DisplayPort 1.4a
Outputs
No outputs
1x 6-pin
Power Connectors
1x 6-pin
Graphics Processor
Ellesmere
GPU Name
Cape Verde
Polaris 10 XT
(215-0876184)
(215-0876184)
GPU Variant
Cape Verde PRX
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
5.7 billion
Transistors
1.5 billion
232 mm²
Die Size
123 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
1.2
1.2
Vulkan
1.2
6.4
Shader Model
5.1
