Radeon HD 7750 vs Radeon HD 7870 XT

Intro

Compare those specifications to the Radeon HD 7870 XT, which features GPU core speed of 925 MHz, and 2048 MB of GDDR5 memory set to run at 1500 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 96 TAUs, and 32 Raster Operation 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 7870 XT		6390 points
Radeon HD 7750		2240 points
	Difference: 4150 (185%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 130 Watts (236%)

Memory Bandwidth

Performance-wise, the Radeon HD 7870 XT should in theory be quite a bit superior to the Radeon HD 7750 in general. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 120000 (167%)

Texel Rate

The Radeon HD 7870 XT should be a lot (more or less 247%) faster with regards to texture filtering than the Radeon HD 7750. (explain)

Radeon HD 7870 XT		88800 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 63200 (247%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7870 XT is the winner, by a large margin. (explain)

Radeon HD 7870 XT		29600 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 16800 (131%)

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 moved past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.