ATI Radeon HD 4890 vs NVIDIA GeForce GTX 645 OEM

VS

ATI Radeon HD 4890 NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 and 1024MB VRAM GeForce GTX 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4890 's Advantages

Larger VRAM bandwidth (124.8GB/s vs 64.00GB/s)

224 additional rendering cores

NVIDIA GeForce GTX 645 OEM 's Advantages

Released 4 years late

Lower TDP (65W vs 190W)

Score

Benchmark

FP32 (float)

Radeon HD 4890 +43%

1.36 TFLOPS

GeForce GTX 645 OEM

0.949 TFLOPS

Radeon HD 4890

VS

GeForce GTX 645 OEM

Graphics Card

Apr 2009

Release Date

Apr 2013

Radeon R700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

975 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

124.8GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

10

Compute Units

-

800

Shading Units

576

40

TMUs

48

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

Theoretical Performance

13.60 GPixel/s

Pixel Rate

9.888 GPixel/s

34.00 GTexel/s

Texture Rate

39.55 GTexel/s

-

FP16 (half)

-

1360 GFLOPS

FP32 (float)

949.2 GFLOPS

272.0 GFLOPS

FP64 (double)

39.55 GFLOPS

Graphics Processor

RV790

GPU Name

GK106

RV790 XT (215-0758016)

GPU Variant

GK106-200-A1

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.959 billion

Transistors

2.54 billion

282 mm²

Die Size

221 mm²

Board Design

190W

TDP

65W

450 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

None

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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