GeForce GTX 650 vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which makes use of a 40 nm design. AMD has set the core speed at 840 MHz. The GDDR5 RAM is set to run at a speed of 1050 MHz on this particular card. It features 800 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 650		2263 points
Radeon HD 6790		2150 points
	Difference: 113 (5%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 6790		150 Watts
	Difference: 86 Watts (134%)

Memory Bandwidth

Theoretically, the Radeon HD 6790 should be a lot faster than the GeForce GTX 650 overall. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 54400 (68%)

Texel Rate

The GeForce GTX 650 will be just a bit (approximately 1%) better at texture filtering than the Radeon HD 6790. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 256 (1%)

Pixel Rate

The GeForce GTX 650 will be quite a bit (approximately 26%) more effective at anti-aliasing than the Radeon HD 6790, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 3488 (26%)

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 largest amount of information (measured in MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.