AMD Radeon HD 7870 XT vs NVIDIA GeForce 9400 GT PCI

VS

AMD Radeon HD 7870 XT

NVIDIA GeForce 9400 GT PCI

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 256MB VRAM GeForce 9400 GT PCI 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 4 years and 3 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 9400 GT PCI 's Advantages

Lower TDP (50W vs 185W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT +6555%

2.995 TFLOPS

GeForce 9400 GT PCI

0.045 TFLOPS

Radeon HD 7870 XT

VS

GeForce 9400 GT PCI

Graphics Card

Nov 2012

Release Date

Aug 2008

Southern Islands

Generation

GeForce 9

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCI

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

400 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

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

2.200 GPixel/s

93.60 GTexel/s

Texture Rate

4.400 GTexel/s

-

2.995 TFLOPS

FP32 (float)

44.80 GFLOPS

748.8 GFLOPS

FP64 (double)

-

Board Design

185W

TDP

50W

450 W

Suggested PSU

250 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

G96C

Tahiti LE (215-0821122)

GPU Variant

-

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.314 billion

352 mm²

Die Size

121 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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