AMD Radeon HD 6770M Mac Edition vs NVIDIA GeForce GT 620M

VS

AMD Radeon HD 6770M Mac Edition

NVIDIA GeForce GT 620M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6770M Mac Edition and 1024MB VRAM GeForce GT 620M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770M Mac Edition 's Advantages

Larger VRAM bandwidth (57.60GB/s vs 28.80GB/s)

384 additional rendering cores

NVIDIA GeForce GT 620M 's Advantages

Released 1 years and 7 months late

More VRAM (1024GB vs 512GB)

Lower TDP (15W vs 35W)

Score

Benchmark

FP32 (float)

Radeon HD 6770M Mac Edition +175%

0.696 TFLOPS

GeForce GT 620M

0.253 TFLOPS

Radeon HD 6770M Mac Edition

VS

GeForce GT 620M

Graphics Card

Jan 2011

Release Date

Aug 2012

Vancouver

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

57.60GB/s

Bandwidth

28.80GB/s

Render Config

6

Compute Units

-

SM Count

2

480

Shading Units

96

24

TMUs

16

8

ROPs

4

-

8 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

5.800 GPixel/s

Pixel Rate

2.640 GPixel/s

17.40 GTexel/s

Texture Rate

10.56 GTexel/s

-

696.0 GFLOPS

FP32 (float)

253.4 GFLOPS

-

FP64 (double)

21.12 GFLOPS

Board Design

35W

TDP

15W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Whistler

GPU Name

GF108

Whistler XT (216-0810001)

GPU Variant

N13P-GLP-A1

TeraScale 2

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.716 billion

Transistors

0.585 billion

104 mm²

Die Size

116 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

5.0

Shader Model

5.1

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