Geforce GTX 670 vs Radeon HD 7870 XT

Intro

Compare all of that to the Radeon HD 7870 XT, which makes use of a 28 nm design. AMD has clocked the core speed at 925 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this particular model. It features 1536 SPUs as well as 96 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

Geforce GTX 670		7351 points
Radeon HD 7870 XT		6390 points
	Difference: 961 (15%)

Ethereum Mining Hash Rate

Radeon HD 7870 XT		15 Mh/s
Geforce GTX 670		13 Mh/s
	Difference: 2 (15%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670		170 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 15 Watts (9%)

Memory Bandwidth

Both cards have the exact same memory bandwidth, so in theory they should have the same performance. (explain)

Texel Rate

The Geforce GTX 670 is a small bit (approximately 15%) faster with regards to texture filtering than the Radeon HD 7870 XT. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 13680 (15%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7870 XT is superior to the Geforce GTX 670, but only just. (explain)

Radeon HD 7870 XT		29600 Mpixels/sec
Geforce GTX 670		29280 Mpixels/sec
	Difference: 320 (1%)

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 megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.