NVIDIA GeForce GT 630 vs AMD Radeon R9 255 OEM

VS

NVIDIA GeForce GT 630

AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 630 and 2GB VRAM Radeon R9 255 OEM 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 7 months late

Boost Clock930MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (73.60GB/s vs 28.80GB/s)

416 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 630

0.311 TFLOPS

Radeon R9 255 OEM +206%

0.952 TFLOPS

GeForce GT 630

VS

Radeon R9 255 OEM

Graphics Card

May 2012

Release Date

Dec 2013

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

930 MHz

900 MHz

Memory Clock

1150 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

28.80GB/s

Bandwidth

73.60GB/s

Render Config

-

Compute Units

8

2

SM Count

-

96

Shading Units

512

16

TMUs

32

4

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

3.240 GPixel/s

Pixel Rate

14.88 GPixel/s

12.96 GTexel/s

Texture Rate

29.76 GTexel/s

-

311.0 GFLOPS

FP32 (float)

952.3 GFLOPS

25.92 GFLOPS

FP64 (double)

59.52 GFLOPS

Board Design

65W

TDP

65W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

No outputs

None

Power Connectors

1x 6-pin

Graphics Processor

GF108

GPU Name

Cape Verde

GF108-400-A1

GPU Variant

Cape Verde PRX

Fermi

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

1.5 billion

116 mm²

Die Size

123 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

5.1

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