GeForce GTX 870M vs Geforce GTX 770

Intro

Compare that to the Geforce GTX 770, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1046 MHz. The GDDR5 memory is set to run at a frequency of 1753 MHz on this specific model. It features 1536 SPUs along with 128 Texture Address Units 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

Geforce GTX 770		7854 points
GeForce GTX 870M		4770 points
	Difference: 3084 (65%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
Geforce GTX 770		230 Watts
	Difference: 120 Watts (109%)

Memory Bandwidth

Performance-wise, the Geforce GTX 770 should in theory be a lot better than the GeForce GTX 870M in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 128384 (134%)

Texel Rate

The Geforce GTX 770 should be much (more or less 27%) better at texture filtering than the GeForce GTX 870M. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 870M		105392 Mtexels/sec
	Difference: 28496 (27%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 770 is superior to the GeForce GTX 870M, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 10888 (48%)

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 max amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of texture units 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per 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 sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.