GeForce GTX 880M vs Geforce GTX 770

Intro

Compare those specs to the Geforce GTX 770, which uses a 28 nm design. nVidia has set the core frequency at 1046 MHz. The GDDR5 memory works at a speed of 1753 MHz on this particular model. It features 1536 SPUs as well as 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 880M		6360 points
	Difference: 1494 (23%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Geforce GTX 770		230 Watts
	Difference: 100 Watts (77%)

Memory Bandwidth

The Geforce GTX 770, in theory, should perform a lot faster than the GeForce GTX 880M overall. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 96384 (75%)

Texel Rate

The Geforce GTX 770 should be just a bit (about 10%) faster with regards to texture filtering than the GeForce GTX 880M. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 880M		122112 Mtexels/sec
	Difference: 11776 (10%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 770 is the winner, though not by far. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 880M		30528 Mpixels/sec
	Difference: 2944 (10%)

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 maximum amount of information (counted in MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.