AMD Radeon HD 6990 vs NVIDIA GeForce GT 120 Mac Edition

VS

AMD Radeon HD 6990

NVIDIA GeForce GT 120 Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 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 6990 's Advantages

Released 2 years and 2 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (160.0GB/s vs 25.60GB/s)

1504 additional rendering cores

NVIDIA GeForce GT 120 Mac Edition 's Advantages

Lower TDP (50W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990 +2733%

2.55 TFLOPS

GeForce GT 120 Mac Edition

0.09 TFLOPS

Radeon HD 6990

VS

GeForce GT 120 Mac Edition

Graphics Card

Mar 2011

Release Date

Jan 2009

Northern Islands

Generation

GeForce 100

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

25.60GB/s

Render Config

24

Compute Units

-

SM Count

4

1536

Shading Units

32

96

TMUs

16

32

ROPs

8

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

4.400 GPixel/s

79.68 GTexel/s

Texture Rate

8.800 GTexel/s

-

2.550 TFLOPS

FP32 (float)

89.60 GFLOPS

637.4 GFLOPS

FP64 (double)

-

Board Design

375W

TDP

50W

750 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x DVI 1x mini-DisplayPort

2x 8-pin

Power Connectors

None

Graphics Processor

Antilles

GPU Name

G96C

Antilles XT (215-0807027)

GPU Variant

-

TeraScale 3

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

2.64 billion

Transistors

0.314 billion

389 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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