AMD Radeon HD 6870 vs NVIDIA GeForce GTX 680 Mac Edition

VS

AMD Radeon HD 6870

NVIDIA GeForce GTX 680 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 2GB VRAM GeForce GTX 680 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

Lower TDP (151W vs 195W)

NVIDIA GeForce GTX 680 Mac Edition 's Advantages

Released 2 years and 6 months late

Boost Clock1058MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (192.3GB/s vs 134.4GB/s)

416 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870

2.016 TFLOPS

GeForce GTX 680 Mac Edition +61%

3.25 TFLOPS

Radeon HD 6870

VS

GeForce GTX 680 Mac Edition

Graphics Card

Oct 2010

Release Date

Apr 2013

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

1006 MHz

-

Boost Clock

1058 MHz

1050 MHz

Memory Clock

1502 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

192.3GB/s

Render Config

14

Compute Units

-

1120

Shading Units

1536

56

TMUs

128

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

33.86 GPixel/s

50.40 GTexel/s

Texture Rate

135.4 GTexel/s

-

2.016 TFLOPS

FP32 (float)

3.250 TFLOPS

-

FP64 (double)

135.4 GFLOPS

Board Design

151W

TDP

195W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Barts

GPU Name

GK104

Barts XT (215-0798000)

GPU Variant

GK104-400-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

3.54 billion

255 mm²

Die Size

294 mm²

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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