Compare any two graphics cards:
GeForce GT 420 vs GeForce GTS 150
IntroThe GeForce GT 420 uses a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this card. It features 48 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.Compare those specs to the GeForce GTS 150, which has a clock frequency of 740 MHz and a GDDR3 memory speed of 500 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It features 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.
Display Graphs
Power Usage and Theoretical BenchmarksPower Consumption (Max TDP)
Memory BandwidthTheoretically speaking, the GeForce GTS 150 should be a small bit faster than the GeForce GT 420 in general. (explain)
Texel RateThe GeForce GTS 150 is a lot (more or less 746%) faster with regards to anisotropic filtering than the GeForce GT 420. (explain)
Pixel RateThe GeForce GTS 150 is quite a bit (approximately 323%) better at AA than the GeForce GT 420, and also should be able to handle higher screen resolutions more effectively. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 processed in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second. Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max 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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