AMD Radeon HD 7870 XT vs NVIDIA GeForce GTX 680

VS

AMD Radeon HD 7870 XT

NVIDIA GeForce GTX 680

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 2GB VRAM GeForce GTX 680 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Released 8 months late

Lower TDP (185W vs 195W)

NVIDIA GeForce GTX 680 's Advantages

Boost Clock has increased by 9% (1058MHz vs 975MHz)

Larger VRAM bandwidth (192.3GB/s vs 192.0GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT

2.995 TFLOPS

GeForce GTX 680 +8%

3.25 TFLOPS

Radeon HD 7870 XT

VS

GeForce GTX 680

Graphics Card

Nov 2012

Release Date

Mar 2012

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

925 MHz

Base Clock

1006 MHz

975 MHz

Boost Clock

1058 MHz

1500 MHz

Memory Clock

1502 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

192.0GB/s

Bandwidth

192.3GB/s

Render Config

24

Compute Units

-

1536

Shading Units

1536

96

TMUs

128

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

33.86 GPixel/s

93.60 GTexel/s

Texture Rate

135.4 GTexel/s

-

2.995 TFLOPS

FP32 (float)

3.250 TFLOPS

748.8 GFLOPS

FP64 (double)

135.4 GFLOPS

Board Design

185W

TDP

195W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Tahiti

GPU Name

GK104

Tahiti LE (215-0821122)

GPU Variant

GK104-400-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

3.54 billion

352 mm²

Die Size

294 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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