GeForce 940M vs Radeon HD 6870

Intro

Compare those specifications to the Radeon HD 6870, which uses a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 RAM runs at a speed of 1050 MHz on this card. It features 1120 SPUs as well as 56 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6870		2870 points
GeForce 940M		1740 points
	Difference: 1130 (65%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 6870 should in theory perform quite a bit faster than the GeForce 940M overall. (explain)

Radeon HD 6870		134400 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 118400 (740%)

Texel Rate

The Radeon HD 6870 is quite a bit (approximately 96%) better at anisotropic filtering than the GeForce 940M. (explain)

Radeon HD 6870		50400 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 24672 (96%)

Pixel Rate

The Radeon HD 6870 will be a lot (about 236%) more effective at AA than the GeForce 940M, and also capable of handling higher resolutions better. (explain)

Radeon HD 6870		28800 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 20224 (236%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.