GeForce GTX 880M vs Radeon HD 7770

Intro

Compare those specs to the Radeon HD 7770, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM runs at a frequency of 1125 MHz on this card. It features 640 SPUs as well as 40 TAUs and 16 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

GeForce GTX 880M		6360 points
Radeon HD 7770		3180 points
	Difference: 3180 (100%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 880M		130 Watts
	Difference: 50 Watts (63%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 880M will be 78% faster than the Radeon HD 7770 in general, because of its greater data rate. (explain)

GeForce GTX 880M		128000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 56000 (78%)

Texel Rate

The GeForce GTX 880M should be much (about 205%) better at texture filtering than the Radeon HD 7770. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 82112 (205%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 880M is superior to the Radeon HD 7770, and very much so. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 14528 (91%)

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 (in units of MB per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the interface 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 ANOTHER 2x. The higher the card's memory bandwidth, the better 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 calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, 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 maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.