AMD Radeon HD 7870 XT vs NVIDIA GeForce GTS 450 Rev. 2

VS

AMD Radeon HD 7870 XT

NVIDIA GeForce GTS 450 Rev. 2

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 1024MB VRAM GeForce GTS 450 Rev. 2 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 1 years and 8 months late

Boost Clock975MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (192.0GB/s vs 57.73GB/s)

1344 additional rendering cores

NVIDIA GeForce GTS 450 Rev. 2 's Advantages

Lower TDP (106W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +398%

2.995 TFLOPS

GeForce GTS 450 Rev. 2

0.601 TFLOPS

Radeon HD 7870 XT

VS

GeForce GTS 450 Rev. 2

Graphics Card

Nov 2012

Release Date

Mar 2011

Southern Islands

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

902 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

192.0GB/s

Bandwidth

57.73GB/s

Render Config

24

Compute Units

-

SM Count

4

1536

Shading Units

192

96

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

6.264 GPixel/s

93.60 GTexel/s

Texture Rate

25.06 GTexel/s

-

2.995 TFLOPS

FP32 (float)

601.3 GFLOPS

748.8 GFLOPS

FP64 (double)

50.11 GFLOPS

Board Design

185W

TDP

106W

450 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

GF116

Tahiti LE (215-0821122)

GPU Variant

GF116-200-KA-A1

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

1.17 billion

352 mm²

Die Size

238 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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