AMD Radeon R9 255 OEM vs NVIDIA GeForce GT 620 OEM

VS

AMD Radeon R9 255 OEM NVIDIA GeForce GT 620 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 512MB VRAM GeForce GT 620 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 8 months late

Boost Clock930MHz

Larger VRAM bandwidth (73.60GB/s vs 14.37GB/s)

464 additional rendering cores

NVIDIA GeForce GT 620 OEM 's Advantages

Lower TDP (30W vs 65W)

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM +510%

0.952 TFLOPS

GeForce GT 620 OEM

0.156 TFLOPS

Radeon R9 255 OEM

VS

GeForce GT 620 OEM

Graphics Card

Dec 2013

Release Date

Apr 2012

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

898 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

73.60GB/s

Bandwidth

14.37GB/s

Render Config

-

SM Count

1

8

Compute Units

-

512

Shading Units

48

32

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

128 KB

Theoretical Performance

14.88 GPixel/s

Pixel Rate

1.620 GPixel/s

29.76 GTexel/s

Texture Rate

6.480 GTexel/s

-

FP16 (half)

-

952.3 GFLOPS

FP32 (float)

155.5 GFLOPS

59.52 GFLOPS

FP64 (double)

12.96 GFLOPS

Graphics Processor

Cape Verde

GPU Name

GF119

Cape Verde PRX

GPU Variant

-

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

0.292 billion

123 mm²

Die Size

79 mm²

Board Design

65W

TDP

30W

250 W

Suggested PSU

200 W

No outputs

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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