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AMD Radeon HD 6770

vs

AMD Radeon HD 6970M

GPU Comparison Result

Below are the results of a comparison of AMD Radeon HD 6770 and AMD Radeon HD 6970M video cards based on key performance characteristics, as well as power consumption and much more.

Advantages

AMD Radeon HD 6970M

Higher Bandwidth: 115.2 GB/s (76.80 GB/s vs 115.2 GB/s)
More Shading Units: 960 (800 vs 960)

Basic

AMD

Label Name

AMD

January 2011

Launch Date

January 2011

Desktop

Platform

Mobile

Radeon HD 6770

Model Name

Radeon HD 6970M

Northern Islands

Generation

Vancouver

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

1,040 million

Transistors

1,700 million

Compute Units

TMUs

Texture Mapping Units (TMUs) serve as components of the GPU, which are capable of rotating, scaling, and distorting binary images, and then placing them as textures onto any plane of a given 3D model. This process is called texture mapping.

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

TeraScale 2

Architecture

TeraScale 2

Memory Specifications

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

The memory bus width refers to the number of bits of data that the video memory can transfer within a single clock cycle. The larger the bus width, the greater the amount of data that can be transmitted instantaneously, making it one of the crucial parameters of video memory. The memory bandwidth is calculated as: Memory Bandwidth = Memory Frequency x Memory Bus Width / 8. Therefore, when the memory frequencies are similar, the memory bus width will determine the size of the memory bandwidth.

256bit

1200MHz

Memory Clock

900MHz

76.80 GB/s

Bandwidth

Memory bandwidth refers to the data transfer rate between the graphics chip and the video memory. It is measured in bytes per second, and the formula to calculate it is: memory bandwidth = working frequency × memory bus width / 8 bits.

115.2 GB/s

Display and Media

2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1

Outputs

No outputs

Theoretical Performance

13.60 GPixel/s

Pixel Rate

Pixel fill rate refers to the number of pixels a graphics processing unit (GPU) can render per second, measured in MPixels/s (million pixels per second) or GPixels/s (billion pixels per second). It is the most commonly used metric to evaluate the pixel processing performance of a graphics card.

21.76 GPixel/s

34.00 GTexel/s

Texture Rate

Texture fill rate refers to the number of texture map elements (texels) that a GPU can map to pixels in a single second.

32.64 GTexel/s

1.387 TFLOPS

FP32 (float)

An important metric for measuring GPU performance is floating-point computing capability. Single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks, while double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.

1.28 TFLOPS

Miscellaneous

800

Shading Units

The most fundamental processing unit is the Streaming Processor (SP), where specific instructions and tasks are executed. GPUs perform parallel computing, which means multiple SPs work simultaneously to process tasks.

960

8 KB (per CU)

L1 Cache

8 KB (per CU)

256KB

L2 Cache

512KB

108W

TDP

75W

1.2

OpenCL Version

1.2

4.4

OpenGL

4.4

11.2 (11_0)

DirectX

11.2 (11_0)

1x 6-pin

Power Connectors

None

ROPs

The Raster Operations Pipeline (ROPs) is primarily responsible for handling lighting and reflection calculations in games, as well as managing effects like anti-aliasing (AA), high resolution, smoke, and fire. The more demanding the anti-aliasing and lighting effects in a game, the higher the performance requirements for the ROPs; otherwise, it may result in a sharp drop in frame rate.

5.0

Shader Model

5.0

300W

Suggested PSU

Benchmarks

FP32 (float) / TFLOPS

Radeon HD 6770

1.387 +8%