GeForce GTS 150 vs Radeon HD 3650

Intro

Compare that to the Radeon HD 3650, which features a core clock frequency of 725 MHz and a GDDR4 memory speed of 800 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It features 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Performance-wise, the GeForce GTS 150 should theoretically be a lot better than the Radeon HD 3650 overall. (explain)

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

Texel Rate

The GeForce GTS 150 should be a lot (about 717%) more effective at anisotropic filtering than the Radeon HD 3650. (explain)

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

Pixel Rate

The GeForce GTS 150 should be much (approximately 308%) better at FSAA than the Radeon HD 3650, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTS 150		11840 Mpixels/sec
Radeon HD 3650		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 data (counted in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount 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 speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's 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 is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.