GeForce GTX 965M vs Radeon HD 7870

Intro

Compare all that to the Radeon HD 7870, which has a clock speed of 1000 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It features 1280 SPUs, 80 TAUs, and 32 ROPs.

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 7870		6230 points
GeForce GTX 965M		5650 points
	Difference: 580 (10%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Radeon HD 7870		175 Watts
	Difference: 115 Watts (192%)

Memory Bandwidth

The Radeon HD 7870 should in theory be much faster than the GeForce GTX 965M in general. (explain)

Radeon HD 7870		153600 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 89600 (140%)

Texel Rate

The Radeon HD 7870 is quite a bit (about 32%) faster with regards to AF than the GeForce GTX 965M. (explain)

Radeon HD 7870		80000 Mtexels/sec
GeForce GTX 965M		60416 Mtexels/sec
	Difference: 19584 (32%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7870 is a better choice, but it probably won't make a huge difference. (explain)

Radeon HD 7870		32000 Mpixels/sec
GeForce GTX 965M		30208 Mpixels/sec
	Difference: 1792 (6%)

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: Memory bandwidth is the largest amount of information (measured in MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.