AMD Radeon HD 6990M vs NVIDIA GeForce GT 755M Mac Edition

VS

AMD Radeon HD 6990M NVIDIA GeForce GT 755M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 1024MB VRAM GeForce GT 755M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M 's Advantages

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (115.2GB/s vs 80.00GB/s)

736 additional rendering cores

NVIDIA GeForce GT 755M Mac Edition 's Advantages

Released 2 years and 4 months late

Lower TDP (50W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 6990M +92%

1.602 TFLOPS

GeForce GT 755M Mac Edition

0.833 TFLOPS

Radeon HD 6990M

VS

GeForce GT 755M Mac Edition

Graphics Card

Jul 2011

Release Date

Nov 2013

Vancouver

Generation

GeForce 700M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

80.00GB/s

Render Config

-

SM Count

-

14

Compute Units

-

1120

Shading Units

384

56

TMUs

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

Theoretical Performance

22.88 GPixel/s

Pixel Rate

8.680 GPixel/s

40.04 GTexel/s

Texture Rate

34.72 GTexel/s

-

FP16 (half)

-

1.602 TFLOPS

FP32 (float)

833.3 GFLOPS

-

FP64 (double)

34.72 GFLOPS

Graphics Processor

Blackcomb

GPU Name

GK107

Blackcomb XTX (216-0811030)

GPU Variant

GT 755M

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

1.27 billion

212 mm²

Die Size

118 mm²

Board Design

100W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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