NVIDIA GeForce 9800 GX2 vs AMD Radeon HD 7870 XT

VS

NVIDIA GeForce 9800 GX2

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 512MB VRAM GeForce 9800 GX2 and 2GB VRAM Radeon HD 7870 XT 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 8 months late

Boost Clock975MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (192.0GB/s vs 64.00GB/s)

1408 additional rendering cores

Lower TDP (185W vs 197W)

Score

Benchmark

FP32 (float)

GeForce 9800 GX2

0.384 TFLOPS

Radeon HD 7870 XT +679%

2.995 TFLOPS

GeForce 9800 GX2

VS

Radeon HD 7870 XT

Graphics Card

Mar 2008

Release Date

Nov 2012

GeForce 9

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

975 MHz

1000 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

64.00GB/s

Bandwidth

192.0GB/s

Render Config

-

Compute Units

24

16

SM Count

-

128

Shading Units

1536

64

TMUs

96

16

ROPs

32

-

L1 Cache

16 KB (per CU)

64 KB

L2 Cache

512 KB

-

Theoretical Performance

9.600 GPixel/s

Pixel Rate

31.20 GPixel/s

38.40 GTexel/s

Texture Rate

93.60 GTexel/s

-

384.0 GFLOPS

FP32 (float)

2.995 TFLOPS

-

FP64 (double)

748.8 GFLOPS

Board Design

197W

TDP

185W

450 W

Suggested PSU

450 W

2x DVI 1x HDMI

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

G92

GPU Name

Tahiti

G92-450-A2

GPU Variant

Tahiti LE (215-0821122)

Tesla

Architecture

GCN 1.0

TSMC

Foundry

TSMC

65 nm

Process Size

28 nm

0.754 billion

Transistors

4.313 billion

324 mm²

Die Size

352 mm²

Graphics Features

11.1 (10_0)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

1.1

CUDA

-

4.0

Shader Model

5.1

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