ATI Radeon HD 4870 vs NVIDIA GeForce GTX 650

VS

ATI Radeon HD 4870

NVIDIA GeForce GTX 650

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 1024MB VRAM GeForce GTX 650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 80.00GB/s)

416 additional rendering cores

NVIDIA GeForce GTX 650 's Advantages

Released 4 years and 3 months late

More VRAM (1024GB vs 512GB)

Lower TDP (65W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 +47%

1.2 TFLOPS

GeForce GTX 650

0.812 TFLOPS

Radeon HD 4870

VS

GeForce GTX 650

Graphics Card

Jun 2008

Release Date

Sep 2012

Radeon R700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

80.00GB/s

Render Config

10

Compute Units

-

800

Shading Units

384

40

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

8.464 GPixel/s

30.00 GTexel/s

Texture Rate

33.86 GTexel/s

-

1200 GFLOPS

FP32 (float)

812.5 GFLOPS

240.0 GFLOPS

FP64 (double)

33.86 GFLOPS

Board Design

150W

TDP

65W

450 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

2x DVI 1x mini-HDMI 1.4a

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV770

GPU Name

GK107

RV770 XT (215-0669049)

GPU Variant

GK107-450-A2

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

1.27 billion

256 mm²

Die Size

118 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

4.1

Shader Model

5.1

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