GeForce GTS 250 512MB vs Radeon HD 5770

Intro

Compare all that to the Radeon HD 5770, which features core clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Crysis

Settings:	High Detail
AA:	4x
AF:	none
Resolution:	1680x1050
Test Machine:	Intel Core i5-750,Windows 7 Ultimate x64,3 x 2GB (Source)

Radeon HD 5770		34 FPS
GeForce GTS 250 512MB		27 FPS
	Difference: 7 FPS (26%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTS 250 512MB		145 Watts
	Difference: 37 Watts (34%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5770 should be a small bit faster than the GeForce GTS 250 512MB in general. (explain)

Radeon HD 5770		76800 MB/sec
GeForce GTS 250 512MB		70400 MB/sec
	Difference: 6400 (9%)

Texel Rate

The GeForce GTS 250 512MB is a lot (more or less 39%) better at texture filtering than the Radeon HD 5770. (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 13232 (39%)

Pixel Rate

The Radeon HD 5770 will be a bit (about 15%) more effective at AA than the GeForce GTS 250 512MB, and also should be able to handle higher resolutions better. (explain)

Radeon HD 5770		13600 Mpixels/sec
GeForce GTS 250 512MB		11808 Mpixels/sec
	Difference: 1792 (15%)

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

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 can be processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.