NVIDIA GeForce GTX 950 vs ATI Radeon HD 4855

VS

NVIDIA GeForce GTX 950

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 950 and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 950 's Advantages

Released 5 years and 7 months late

Boost Clock1188MHz

More VRAM (2GB vs 512GB)

128 additional rendering cores

Lower TDP (90W vs 110W)

ATI Radeon HD 4855 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 105.8GB/s)

Score

Benchmark

FP32 (float)

GeForce GTX 950 +147%

1.825 TFLOPS

Radeon HD 4855

0.736 TFLOPS

GeForce GTX 950

VS

Radeon HD 4855

Graphics Card

Aug 2015

Release Date

Jan 2010

GeForce 900

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1024 MHz

Base Clock

-

1188 MHz

Boost Clock

-

1653 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

105.8GB/s

Bandwidth

115.2GB/s

Render Config

-

Compute Units

8

-

768

Shading Units

640

48

TMUs

32

ROPs

16

-

48 KB (per SMM)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

38.02 GPixel/s

Pixel Rate

9.200 GPixel/s

57.02 GTexel/s

Texture Rate

18.40 GTexel/s

-

1.825 TFLOPS

FP32 (float)

736.0 GFLOPS

57.02 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

90W

TDP

110W

250 W

Suggested PSU

300 W

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GM206

GPU Name

RV770

GM206-250-A1

GPU Variant

RV770 PRO (215-0669065)

Maxwell 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.94 billion

Transistors

0.956 billion

228 mm²

Die Size

256 mm²

Graphics Features

12 (12_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

1.3

Vulkan

N/A

5.2

CUDA

-

6.4

Shader Model

4.1

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