NVIDIA GeForce GT 620 vs AMD Radeon HD 7950 Mac Edition

VS

NVIDIA GeForce GT 620 AMD Radeon HD 7950 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 620 and 3GB VRAM Radeon HD 7950 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 620 's Advantages

Lower TDP (49W vs 200W)

AMD Radeon HD 7950 Mac Edition 's Advantages

Released 10 months late

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (240.0GB/s vs 14.40GB/s)

1696 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 620

0.269 TFLOPS

Radeon HD 7950 Mac Edition +965%

2.867 TFLOPS

GeForce GT 620

VS

Radeon HD 7950 Mac Edition

Graphics Card

May 2012

Release Date

Mar 2013

GeForce 600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

3GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

384bit

14.40GB/s

Bandwidth

240.0GB/s

Render Config

2

SM Count

-

Compute Units

28

96

Shading Units

1792

16

TMUs

112

4

ROPs

32

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

768 KB

Theoretical Performance

2.800 GPixel/s

Pixel Rate

25.60 GPixel/s

11.20 GTexel/s

Texture Rate

89.60 GTexel/s

-

FP16 (half)

-

268.8 GFLOPS

FP32 (float)

2.867 TFLOPS

22.40 GFLOPS

FP64 (double)

716.8 GFLOPS

Graphics Processor

GF108

GPU Name

Tahiti

GF108-100-KB-A1

GPU Variant

Tahiti PRO (215-0821056)

Fermi

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

4.313 billion

116 mm²

Die Size

352 mm²

Board Design

49W

TDP

200W

200 W

Suggested PSU

550 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

None

Power Connectors

2x 6-pin

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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