AMD Radeon R9 255 OEM vs NVIDIA GeForce GTX 650

VS

AMD Radeon R9 255 OEM

NVIDIA GeForce GTX 650

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 1024MB VRAM GeForce GTX 650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Released 1 years and 3 months late

Boost Clock930MHz

More VRAM (2GB vs 1024GB)

128 additional rendering cores

NVIDIA GeForce GTX 650 's Advantages

Larger VRAM bandwidth (80.00GB/s vs 73.60GB/s)

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +17%

0.952 TFLOPS

GeForce GTX 650

0.812 TFLOPS

Radeon R9 255 OEM

VS

GeForce GTX 650

Graphics Card

Dec 2013

Release Date

Sep 2012

Volcanic Islands

Generation

GeForce 600

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

1250 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

73.60GB/s

Bandwidth

80.00GB/s

Render Config

8

Compute Units

-

512

Shading Units

384

32

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

8.464 GPixel/s

29.76 GTexel/s

Texture Rate

33.86 GTexel/s

-

952.3 GFLOPS

FP32 (float)

812.5 GFLOPS

59.52 GFLOPS

FP64 (double)

33.86 GFLOPS

Board Design

65W

TDP

65W

250 W

Suggested PSU

250 W

No outputs

Outputs

2x DVI 1x mini-HDMI 1.4a

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Cape Verde

GPU Name

GK107

Cape Verde PRX

GPU Variant

GK107-450-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

1.27 billion

123 mm²

Die Size

118 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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