AMD Radeon HD 6870 vs NVIDIA GeForce GT 120 Mac Edition

VS

AMD Radeon HD 6870

NVIDIA GeForce GT 120 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 512MB VRAM GeForce GT 120 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Released 1 years and 9 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 25.60GB/s)

1088 additional rendering cores

NVIDIA GeForce GT 120 Mac Edition 's Advantages

Lower TDP (50W vs 151W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 +2140%

2.016 TFLOPS

GeForce GT 120 Mac Edition

0.09 TFLOPS

Radeon HD 6870

VS

GeForce GT 120 Mac Edition

Graphics Card

Oct 2010

Release Date

Jan 2009

Northern Islands

Generation

GeForce 100

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

25.60GB/s

Render Config

14

Compute Units

-

SM Count

4

1120

Shading Units

32

56

TMUs

16

32

ROPs

8

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

4.400 GPixel/s

50.40 GTexel/s

Texture Rate

8.800 GTexel/s

-

2.016 TFLOPS

FP32 (float)

89.60 GFLOPS

-

Board Design

151W

TDP

50W

450 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

1x DVI 1x mini-DisplayPort

2x 6-pin

Power Connectors

None

Graphics Processor

Barts

GPU Name

G96C

Barts XT (215-0798000)

GPU Variant

-

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.314 billion

255 mm²

Die Size

121 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

5.0

Shader Model

4.0

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