GeForce GTS 150 vs Radeon HD 3650 256MB

Intro

Compare those specs to the Radeon HD 3650 256MB, which makes use of a 55 nm design. AMD has set the core frequency at 725 MHz. The DDR2 memory runs at a frequency of 800 MHz on this model. 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 256MB		78 Watts
GeForce GTS 150		141 Watts
	Difference: 63 Watts (81%)

Memory Bandwidth

Theoretically, the GeForce GTS 150 should be quite a bit faster than the Radeon HD 3650 256MB overall. (explain)

GeForce GTS 150		32000 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The GeForce GTS 150 should be much (about 717%) faster with regards to texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 41560 (717%)

Pixel Rate

The GeForce GTS 150 will be much (approximately 308%) better at FSAA than the Radeon HD 3650 256MB, and also able to handle higher resolutions without slowing down too much. (explain)

GeForce GTS 150		11840 Mpixels/sec
Radeon HD 3650 256MB		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 max amount of information (measured in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in one 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 clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.