AMD Radeon HD 7970 vs NVIDIA GeForce GT 440 Mac Edition

VS

AMD Radeon HD 7970

NVIDIA GeForce GT 440 Mac Edition

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 1024MB VRAM GeForce GT 440 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 's Advantages

Released 10 months late

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (264.0GB/s vs 21.34GB/s)

1952 additional rendering cores

NVIDIA GeForce GT 440 Mac Edition 's Advantages

Lower TDP (65W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 7970 +1118%

3.789 TFLOPS

GeForce GT 440 Mac Edition

0.311 TFLOPS

Radeon HD 7970

VS

GeForce GT 440 Mac Edition

Graphics Card

Dec 2011

Release Date

Feb 2011

Southern Islands

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

667 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

128bit

264.0GB/s

Bandwidth

21.34GB/s

Render Config

32

Compute Units

-

SM Count

2

2048

Shading Units

96

128

TMUs

16

32

ROPs

4

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

3.240 GPixel/s

118.4 GTexel/s

Texture Rate

12.96 GTexel/s

-

3.789 TFLOPS

FP32 (float)

311.0 GFLOPS

947.2 GFLOPS

FP64 (double)

25.92 GFLOPS

Board Design

250W

TDP

65W

600 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

GF108

Tahiti XT (215-0821060)

GPU Variant

GF108-400-A1

GCN 1.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

0.585 billion

352 mm²

Die Size

116 mm²

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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