AMD Radeon HD 7870 XT vs NVIDIA GeForce GTX 1080

VS

AMD Radeon HD 7870 XT NVIDIA GeForce GTX 1080

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 8GB VRAM GeForce GTX 1080 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 1080 's Advantages

Released 3 years and 6 months late

Boost Clock has increased by 78% (1733MHz vs 975MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (320.3GB/s vs 192.0GB/s)

1024 additional rendering cores

Lower TDP (180W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT

2.995 TFLOPS

GeForce GTX 1080 +196%

8.873 TFLOPS

Radeon HD 7870 XT

VS

GeForce GTX 1080

Graphics Card

Nov 2012

Release Date

May 2016

Southern Islands

Generation

GeForce 10

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

925 MHz

Base Clock

1607 MHz

975 MHz

Boost Clock

1733 MHz

1500 MHz

Memory Clock

1251 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5X

256bit

Memory Bus

256bit

192.0GB/s

Bandwidth

320.3GB/s

Render Config

-

SM Count

20

24

Compute Units

-

1536

Shading Units

2560

96

TMUs

160

32

ROPs

64

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

48 KB (per SM)

512 KB

L2 Cache

2 MB

Theoretical Performance

31.20 GPixel/s

Pixel Rate

110.9 GPixel/s

93.60 GTexel/s

Texture Rate

277.3 GTexel/s

-

FP16 (half)

138.6 GFLOPS

2.995 TFLOPS

FP32 (float)

8.873 TFLOPS

748.8 GFLOPS

FP64 (double)

277.3 GFLOPS

Graphics Processor

Tahiti

GPU Name

GP104

Tahiti LE (215-0821122)

GPU Variant

GP104-400-A1

GCN 1.0

Architecture

Pascal

TSMC

Foundry

TSMC

28 nm

Process Size

16 nm

4.313 billion

Transistors

7.2 billion

352 mm²

Die Size

314 mm²

Board Design

185W

TDP

180W

450 W

Suggested PSU

450 W

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

Outputs

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

1x 8-pin

Graphics Features

12 (11_1)

DirectX

12 (12_1)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

6.1

5.1

Shader Model

6.4

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