GeForce GTX 650 vs Radeon HD 7850

Intro

Compare all of that to the Radeon HD 7850, which features core clock speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

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

Radeon HD 7850		5200 points
GeForce GTX 650		2263 points
	Difference: 2937 (130%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 7850		130 Watts
	Difference: 66 Watts (103%)

Memory Bandwidth

The Radeon HD 7850 should in theory be much faster than the GeForce GTX 650 overall. (explain)

Radeon HD 7850		153600 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 73600 (92%)

Texel Rate

The Radeon HD 7850 should be quite a bit (approximately 63%) more effective at AF than the GeForce GTX 650. (explain)

Radeon HD 7850		55040 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 21184 (63%)

Pixel Rate

The Radeon HD 7850 will be quite a bit (about 63%) more effective at anti-aliasing than the GeForce GTX 650, and will be capable of handling higher resolutions more effectively. (explain)

Radeon HD 7850		27520 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 10592 (63%)

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 largest amount of data (counted in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 applied per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at 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 video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core 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 rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.