This may be a case of GTX 770 squeezing out a bit more performance due to GPU Boost 2.0. GTX 770 pulls ahead in TessMark by more than we would expect given the fact that this test should be largely GPU limited. Texel throughput on the other hand is all about the core clocks the improvement over the GTX 680 is barely at 3%, and GTX 770 is well behind GTX 780.įinally we’ll take a quick look at tessellation performance with TessMark. Moving on, we have our 3DMark Vantage texture fillrate test, which does for texels and texture mapping units what the previous test does for ROPs. Compare all that to the Radeon HD 7950 3GB, which uses a 28 nm design. It also is made up of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units. In real games GTX 780 is still going to have the edge, but in edge cases having such a clockspeed gap can lead to some unusual outcomes. The Geforce GTX 770 features a GPU core speed of 1046 MHz, and the 2048 MB of GDDR5 memory is set to run at 1753 MHz through a 256-bit bus. This is a bit paradoxical at first, but it’s worth keeping in mind that this is a pixel throughput test, and GTX 770’s ROPs are clocked a good 200MHz+ higher than GTX 780’s. Thanks to the combination of core clock and memory clock increases, GTX 770 doesn’t just pass GTX 680, but even GTX 780. We’ll start with 3DMark Vantage’s Pixel Fill test. These tests are mostly for comparing cards from within a manufacturer, as opposed to directly comparing AMD and NVIDIA cards. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.As always we’ll also take a quick look at synthetic performance, though as GTX 780 is just another GK110 card, there shouldn't be any surprises here. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. It is measured in millions of texels per second. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). This is worked out by multiplying the total amount of texture units by the core speed of the chip. GeForce GTX 780, Kepler-based, HD-SDI optional. Compare those specs to the Geforce GTX 770, which comes with a core clock speed of 1046 MHz and a GDDR5 memory speed of 1753 MHz. It features 2048 SPUs as well as 128 Texture Address Units and 64 ROPs. Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. Quadro-branded graphics cards differed from the mainstream GeForce lines in. The GeForce GTX 980 features core clock speeds of 1126 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It especially helps with AA, High Dynamic Range and high resolutions. Based on 736,537 user benchmarks for the Nvidia GTX 770 and the RTX 3070, we rank them both on effective speed and value for money against the best 704 GPUs. The better the bandwidth is, the faster the card will be in general. General performance parameters such as number of shaders, GPU core base clock and boost. If the card has DDR memory, it should be multiplied by 2 once again. Based on 375,986 user benchmarks for the Nvidia GTX 1650 and the GTX 770, we rank them both on effective speed and value for money against the best 704 GPUs. GTX 780 has 375 better value for money than GTX 770. The number is calculated by multiplying the card's interface width by its memory clock speed. Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second.
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