ATI Radeon HD 3850 X3 vs NVIDIA GeForce GTX 650

VS

ATI Radeon HD 3850 X3

NVIDIA GeForce GTX 650

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3850 X3 and 1024MB VRAM GeForce GTX 650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 650 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (80.00GB/s vs 54.40GB/s)

64 additional rendering cores

Lower TDP (65W vs 145W)

Score

Benchmark

FP32 (float)

Radeon HD 3850 X3

0.428 TFLOPS

GeForce GTX 650 +89%

0.812 TFLOPS

Radeon HD 3850 X3

VS

GeForce GTX 650

Graphics Card

Unknown

Release Date

Sep 2012

Radeon R600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

80.00GB/s

Render Config

4

Compute Units

-

320

Shading Units

384

16

TMUs

32

16

ROPs

16

-

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.70 GPixel/s

Pixel Rate

8.464 GPixel/s

10.70 GTexel/s

Texture Rate

33.86 GTexel/s

-

428.2 GFLOPS

FP32 (float)

812.5 GFLOPS

-

FP64 (double)

33.86 GFLOPS

Board Design

145W

TDP

65W

300 W

Suggested PSU

250 W

4x DVI

Outputs

2x DVI 1x mini-HDMI 1.4a

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

RV670

GPU Name

GK107

RV670 PRO (215-0708003)

GPU Variant

GK107-450-A2

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

1.27 billion

192 mm²

Die Size

118 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

4.1

Shader Model

5.1

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