AMD Radeon R9 390X vs NVIDIA GeForce 8800 GT Mac Edition

VS

AMD Radeon R9 390X

NVIDIA GeForce 8800 GT Mac Edition

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 512MB VRAM GeForce 8800 GT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390X 's Advantages

Released 7 years and 4 months late

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (384.0GB/s vs 57.60GB/s)

2704 additional rendering cores

NVIDIA GeForce 8800 GT Mac Edition 's Advantages

Lower TDP (125W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X +1660%

5.914 TFLOPS

GeForce 8800 GT Mac Edition

0.336 TFLOPS

Radeon R9 390X

VS

GeForce 8800 GT Mac Edition

Graphics Card

Jun 2015

Release Date

Feb 2008

Pirate Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

900 MHz

Memory

8GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

512bit

Memory Bus

256bit

384.0GB/s

Bandwidth

57.60GB/s

Render Config

44

Compute Units

-

SM Count

14

2816

Shading Units

112

176

TMUs

56

64

ROPs

16

-

16 KB (per CU)

L1 Cache

-

1024 KB

L2 Cache

64 KB

-

Theoretical Performance

67.20 GPixel/s

Pixel Rate

9.600 GPixel/s

184.8 GTexel/s

Texture Rate

33.60 GTexel/s

-

5.914 TFLOPS

FP32 (float)

336.0 GFLOPS

739.2 GFLOPS

FP64 (double)

-

Board Design

275W

TDP

125W

600 W

Suggested PSU

300 W

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

Outputs

2x DVI

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Grenada

GPU Name

G92

Grenada XT (215-0880004)

GPU Variant

G92-270-A2

GCN 2.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

6.2 billion

Transistors

0.754 billion

438 mm²

Die Size

324 mm²

Graphics Features

12 (12_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.1

6.3

Shader Model

4.0

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