Home GPU Comparison AMD Radeon R9 255 OEM vs AMD Radeon R7 250X

AMD Radeon R9 255 OEM vs AMD Radeon R7 250X

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 1024MB VRAM Radeon R7 250X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages
Boost Clock930MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (73.60GB/s vs 72.00GB/s)
Lower TDP (65W vs 80W)
AMD Radeon R7 250X 's Advantages
128 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon R9 255 OEM
0.952 TFLOPS
Radeon R7 250X +27%
1.216 TFLOPS
VS

Graphics Card

Dec 2013
Release Date
Feb 2014
Volcanic Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

900 MHz
Base Clock
-
930 MHz
Boost Clock
-
1150 MHz
Memory Clock
1125 MHz

Memory

2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
128bit
73.60GB/s
Bandwidth
72.00GB/s

Render Config

8
Compute Units
10
-
-
-
512
Shading Units
640
32
TMUs
40
16
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

14.88 GPixel/s
Pixel Rate
15.20 GPixel/s
29.76 GTexel/s
Texture Rate
38.00 GTexel/s
-
-
-
952.3 GFLOPS
FP32 (float)
1216 GFLOPS
59.52 GFLOPS
FP64 (double)
76.00 GFLOPS

Board Design

65W
TDP
80W
250 W
Suggested PSU
250 W
No outputs
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
1x 6-pin

Graphics Processor

Cape Verde
GPU Name
Cape Verde
Cape Verde PRX
GPU Variant
Cape Verde XT
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.5 billion
Transistors
1.5 billion
123 mm²
Die Size
123 mm²

Graphics Features

12 (11_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.2
OpenCL
1.2
1.2
Vulkan
1.2
-
-
-
5.1
Shader Model
5.1

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