GeForce GTS 150 vs Radeon HD 3650 512MB

Intro

Compare all that to the Radeon HD 3650 512MB, which comes with core speeds of 725 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 120(24x5) SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB		78 Watts
GeForce GTS 150		141 Watts
	Difference: 63 Watts (81%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 150 should theoretically be quite a bit better than the Radeon HD 3650 512MB overall. (explain)

GeForce GTS 150		32000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The GeForce GTS 150 will be quite a bit (more or less 717%) faster with regards to AF than the Radeon HD 3650 512MB. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 41560 (717%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTS 150 is superior to the Radeon HD 3650 512MB, by far. (explain)

GeForce GTS 150		11840 Mpixels/sec
Radeon HD 3650 512MB		2900 Mpixels/sec
	Difference: 8940 (308%)

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 past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.