NVIDIA GeForce GTX 660 OEM vs ATI Radeon HD 4850 X2

VS

NVIDIA GeForce GTX 660 OEM ATI Radeon HD 4850 X2

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 512MB VRAM Radeon HD 4850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Released 3 years and 9 months late

Boost Clock888MHz

More VRAM (1536GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 63.68GB/s)

352 additional rendering cores

Lower TDP (130W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM +104%

2.046 TFLOPS

Radeon HD 4850 X2

1 TFLOPS

GeForce GTX 660 OEM

VS

Radeon HD 4850 X2

Graphics Card

Aug 2012

Release Date

Nov 2008

GeForce 600

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

823 MHz

Base Clock

-

888 MHz

Boost Clock

-

1400 MHz

Memory Clock

995 MHz

Memory

1536MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

256bit

134.4GB/s

Bandwidth

63.68GB/s

Render Config

-

SM Count

-

Compute Units

10

1152

Shading Units

800

96

TMUs

40

24

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

Theoretical Performance

21.31 GPixel/s

Pixel Rate

10.00 GPixel/s

85.25 GTexel/s

Texture Rate

25.00 GTexel/s

-

FP16 (half)

-

2.046 TFLOPS

FP32 (float)

1000 GFLOPS

85.25 GFLOPS

FP64 (double)

200.0 GFLOPS

Graphics Processor

GK104

GPU Name

R700

GK104-200-KD-A2

GPU Variant

R700 PRO (215-0669065)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

3.54 billion

Transistors

0.956 billion

294 mm²

Die Size

256 mm²

Board Design

130W

TDP

250W

300 W

Suggested PSU

600 W

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

Outputs

4x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.1

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