Compare any two graphics cards:
Radeon HD 3650 256MB vs Radeon HD 3690/3830
IntroThe Radeon HD 3650 256MB uses a 55 nm design. AMD has clocked the core frequency at 725 MHz. The DDR2 memory is set to run at a frequency of 800 MHz on this particular model. It features 120(24x5) SPUs along with 8 TAUs and 4 ROPs.Compare that to the Radeon HD 3690/3830, which features GPU clock speed of 668 MHz, and 256 MB of GDDR3 RAM running at 828 MHz through a 128-bit bus. It also is made up of 320(64x5) Stream Processors, 16 Texture Address Units, and 16 ROPs.
Display Graphs
Power Usage and Theoretical BenchmarksPower Consumption (Max TDP)
Memory BandwidthTheoretically speaking, the Radeon HD 3690/3830 is 4% quicker than the Radeon HD 3650 256MB in general, due to its greater bandwidth. (explain)
Texel RateThe Radeon HD 3690/3830 should be a lot (more or less 84%) better at anisotropic filtering than the Radeon HD 3650 256MB. (explain)
Pixel RateThe Radeon HD 3690/3830 should be quite a bit (approximately 269%) better at AA than the Radeon HD 3650 256MB, and capable of handling higher resolutions without slowing down too much. (explain)
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
Display Prices
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
Display Specifications
Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions. Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second. Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 fill rate is also dependant 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.
Display Prices
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.
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