NVIDIA GeForce GT 645M vs ATI Mobility Radeon HD 3870 X2

VS

NVIDIA GeForce GT 645M ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 645M and 512MB VRAM Mobility Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645M 's Advantages

Released 4 years and 1 months late

64 additional rendering cores

Lower TDP (32W vs 110W)

ATI Mobility Radeon HD 3870 X2 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 28.80GB/s)

Score

Benchmark

FP32 (float)

GeForce GT 645M +28%

0.544 TFLOPS

Mobility Radeon HD 3870 X2

0.422 TFLOPS

GeForce GT 645M

VS

Mobility Radeon HD 3870 X2

Graphics Card

Oct 2012

Release Date

Sep 2008

GeForce 600M

Generation

M8x

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

850 MHz

Memory

2GB

Memory Size

512MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

256bit

28.80GB/s

Bandwidth

54.40GB/s

Render Config

-

SM Count

-

Compute Units

4

384

Shading Units

320

32

TMUs

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

256 KB

Theoretical Performance

5.672 GPixel/s

Pixel Rate

10.56 GPixel/s

22.69 GTexel/s

Texture Rate

10.56 GTexel/s

-

FP16 (half)

-

544.5 GFLOPS

FP32 (float)

422.4 GFLOPS

22.69 GFLOPS

FP64 (double)

84.48 GFLOPS

Graphics Processor

GK107

GPU Name

M88

N13P-GS

GPU Variant

-

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

1.27 billion

Transistors

0.666 billion

118 mm²

Die Size

192 mm²

Board Design

32W

TDP

110W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.1

Related GPU Comparisons

1

NVIDIA GeForce GT 645M vs NVIDIA GeForce RTX 4070 Mobile

2

NVIDIA GeForce GT 645M vs ATI Mobility Radeon HD 4860

3

NVIDIA GeForce GT 645M vs NVIDIA GeForce 930M

4

NVIDIA GeForce GT 645M vs NVIDIA GeForce RTX 2050 Mobile

5

NVIDIA GeForce GT 645M vs NVIDIA GeForce RTX 3050 Mobile

6

NVIDIA GeForce GT 645M vs NVIDIA GeForce 920M

7

NVIDIA GeForce GT 645M vs NVIDIA GeForce 940MX

8

NVIDIA GeForce GT 645M vs AMD Radeon R9 M395 Mac Edition

9

NVIDIA GeForce GT 645M vs NVIDIA GeForce 315M

10

NVIDIA GeForce GT 645M vs AMD Radeon HD 7750M

Related News

1

AMD Ryzen 9000 DDR5 Memory Frequency Soars: Reaches 8000MHz with All Four Slots Occupied

2

Snapdragon 8 Gen 4 to Feature Frame Interpolation for GPU: A Game-Changing Experience

3

Intel Adds 5 New Device IDs to Latest Linux Xe Kernel in Preparation for Battlemage

4

Ryzen AI 9 365 Benchmark Results Leaked: Significant Improvements in Multi-Core and IPC Performance Over Previous Generation

5

Concerns Raised by Unstable 13th/14th Gen Core CPUs: Motherboard Manufacturers Worry About Impact on Arrow Lake Release and Sales

6

Do You Really Know What a "Rendering Engine" Is? Read This Article to Understand All About It

7

New AMD Zen5 Ryzen 9000 Motherboards X870E/X870 to Adopt USB4! But You’ll Have to Wait Two More Months

8

Surpassing RTX 2050! Intel's Next-Gen Integrated Graphics Benchmark Closely Approaches AMD

9

New Benchmarks for AMD Ryzen AI 9 HX 370 Revealed: Single-Core Parity with R9 7945HX3D, Multi-Core Still Lower

10

X3D Performance Beyond Words! AMD Ryzen 7 9700X May Unlock Power Consumption: From 65W to 120W