AMD Radeon HD 7870 XT vs NVIDIA GeForce 8500 GT

VS

AMD Radeon HD 7870 XT

NVIDIA GeForce 8500 GT

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 256MB VRAM GeForce 8500 GT 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 5 years and 7 months late

Boost Clock975MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (192.0GB/s vs 12.80GB/s)

1520 additional rendering cores

NVIDIA GeForce 8500 GT 's Advantages

Lower TDP (30W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +10227%

2.995 TFLOPS

GeForce 8500 GT

0.029 TFLOPS

Radeon HD 7870 XT

VS

GeForce 8500 GT

Graphics Card

Nov 2012

Release Date

Apr 2007

Southern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

192.0GB/s

Bandwidth

12.80GB/s

Render Config

24

Compute Units

-

SM Count

2

1536

Shading Units

16

96

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

32 KB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

1.836 GPixel/s

93.60 GTexel/s

Texture Rate

3.672 GTexel/s

-

2.995 TFLOPS

FP32 (float)

29.38 GFLOPS

748.8 GFLOPS

FP64 (double)

-

Board Design

185W

TDP

30W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

Tahiti

GPU Name

G86

Tahiti LE (215-0821122)

GPU Variant

G86-300-A2

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

4.313 billion

Transistors

0.21 billion

352 mm²

Die Size

127 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

5.1

Shader Model

4.0

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