NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce 8400 GS PCI

VS

NVIDIA GeForce GTX 660 Rev. 2

NVIDIA GeForce 8400 GS PCI

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 512MB VRAM GeForce 8400 GS PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Released 6 years and 9 months late

Boost Clock1032MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (144.2GB/s vs 5.328GB/s)

952 additional rendering cores

NVIDIA GeForce 8400 GS PCI 's Advantages

Lower TDP (25W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2 +8904%

1.981 TFLOPS

GeForce 8400 GS PCI

0.022 TFLOPS

GeForce GTX 660 Rev. 2

VS

GeForce 8400 GS PCI

Graphics Card

Sep 2014

Release Date

Dec 2007

GeForce 600

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCI

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

333 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR2

192bit

Memory Bus

64bit

144.2GB/s

Bandwidth

5.328GB/s

Render Config

-

SM Count

1

960

Shading Units

8

80

TMUs

4

24

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

16 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

2.268 GPixel/s

82.56 GTexel/s

Texture Rate

2.268 GTexel/s

-

1.981 TFLOPS

FP32 (float)

22.40 GFLOPS

82.56 GFLOPS

FP64 (double)

-

Board Design

140W

TDP

25W

300 W

Suggested PSU

200 W

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

Outputs

1x S-Video 1x DMS-59

1x 6-pin

Power Connectors

None

Graphics Processor

GK104

GPU Name

G98

-

GPU Variant

G98-400-U2

Kepler

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

3.54 billion

Transistors

0.21 billion

294 mm²

Die Size

86 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

1.1

5.1

Shader Model

4.0

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