Compare any two graphics cards:
Radeon HD 3650 512MB vs Radeon HD 3690/3830
IntroThe Radeon HD 3650 512MB has a GPU clock speed of 725 MHz, and the 512 MB of GDDR3 memory runs at 800 MHz through a 128-bit bus. It also is made up of 120(24x5) SPUs, 8 Texture Address Units, and 4 ROPs.Compare those specs to the Radeon HD 3690/3830, which has GPU clock speed of 668 MHz, and 256 MB of GDDR3 RAM running at 828 MHz through a 128-bit bus. It also features 320(64x5) Stream Processors, 16 Texture Address Units, and 16 ROPs.
Display Graphs
Power Usage and Theoretical BenchmarksPower Consumption (Max TDP)
Memory BandwidthTheoretically, the Radeon HD 3690/3830 should perform a bit faster than the Radeon HD 3650 512MB overall. (explain)
Texel RateThe Radeon HD 3690/3830 is a lot (about 84%) better at anisotropic filtering than the Radeon HD 3650 512MB. (explain)
Pixel RateIf running with lots of anti-aliasing is important to you, then the Radeon HD 3690/3830 is a better choice, by a large margin. (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 MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions. Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics 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 number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability 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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