AMD Radeon HD 7770M vs NVIDIA GeForce GT 745A

VS

AMD Radeon HD 7770M NVIDIA GeForce GT 745A

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 7770M and 2GB VRAM GeForce GT 745A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7770M 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 28.80GB/s)

128 additional rendering cores

Lower TDP (32W vs 33W)

NVIDIA GeForce GT 745A 's Advantages

Released 1 years and 4 months late

Boost Clock915MHz

More VRAM (2GB vs 1GB)

Score

Benchmark

FP32 (float)

Radeon HD 7770M

0.691 TFLOPS

GeForce GT 745A +1%

0.703 TFLOPS

Radeon HD 7770M

VS

GeForce GT 745A

Graphics Card

Apr 2012

Release Date

Aug 2013

London

Generation

GeForce 700A

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

837 MHz

-

Boost Clock

915 MHz

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

-

8

Compute Units

-

512

Shading Units

384

32

TMUs

32

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

10.80 GPixel/s

Pixel Rate

7.320 GPixel/s

21.60 GTexel/s

Texture Rate

29.28 GTexel/s

-

FP16 (half)

-

691.2 GFLOPS

FP32 (float)

702.7 GFLOPS

43.20 GFLOPS

FP64 (double)

29.28 GFLOPS

Graphics Processor

Chelsea

GPU Name

GK107

Chelsea XT

GPU Variant

N14P-LP

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

1.27 billion

123 mm²

Die Size

118 mm²

Board Design

32W

TDP

33W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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