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The peak fill rate is 16 GPix / s or 40 GTex / s. With these parameters, the memory bandwidth is about 72 GB / s. This video card is based on the Capo Verde XT chip containing 1.5 billion transistors. The crystal area is 123 sq. mm. The card uses 1GB GDDR5 memory clocked at 1125 MHz (4500 MHz effective). The width of the data bus is 128 bits. Until now, 7770 cards can be found on sale, mainly in the secondary market. However, taking into account the fact that there are also new ones, we can conclude that the model turned out to be quite “tenacious”, despite the age of seven (the date of the map was released on ). The Radeon HD 7770 was arguably the most popular in the entire 77xx line, as it combined sufficient performance at an affordable price. At the time of release, the price for one shader (UWB) was about $ 0.19 and was the lowest in the entire 77xx series. There were also minor differences in the series. So the chip frequencies in the 30th and 50th models were artificially lowered to 800 MHz (instead of 1000 MHz in the 70th and 90th models). In addition, 7790-based cards had 33% faster memory (1500 MHz instead of 1125 MHz).įor the rest of the characteristics, the adapters under consideration were absolutely identical.
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#Amd radeon hd 7800 comparison series
So the 7700 series video adapters had the following core configurations: The main contribution to performance is made by UWB. the number of rasterization blocks (BR).the number of unified shader processors (UWP).The main differences within the series were in the configuration of the cores. The “junior” adapters in the series differed from the “senior” ones only in the number of processors per chip.Īttention! On AMD cards, the core configuration is described by three numbers: Read Graphics Card Features, Characteristics, Types.
#Amd radeon hd 7800 comparison software
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AMD Radeon HD 7700 series specifications.Therefore, until now, many AMD fans recall with horror the period when, having confused only two digits in the adapter index, it was possible to seriously miscalculate the performance. For example, the performance of the 79 differed by more than three times and the performances of the 77 were almost the same. To some extent, this made the 7700 series universal, since, on the one hand, the buyer could choose the performance he was interested in by purchasing a particular adapter. On the other hand, the presence of as many as 4 models with the same filling made a lot of confusion in the classification of video adapters.Ī similar confusion persisted in the next generation of AMD products – the R200 family, and only a couple of years later, with the advent of the R400, the situation with the classification improved markedly. In 2010, AMD, which bought ATI in 2006, stopped using the brand, ATI.The explanation was quite simple: the models differed significantly in the number of unified shader processors. Of the entire HD 7xxx series, only the 7700 had this feature. So, a video card with a memory chip running at 500 MHz would be referred to as having a 1 GHz memory. In order to make our table comparable to older chips, we still use the effective memory clock and not the real memory clock. In the past, manufacturers referred to the memory clocks with double (or quadruple) their real clock rate, because DDR and other technologies based on it (DDR2, GDDR3, etc.) allow the memory chip to transfer two data blocks per clock cycle, while GDDR5 memories allow the memory chip to transfer four data data blocks per clock cycle. It is important to note that beginning in 2007, both AMD (ATI) and NVIDIA started referring to the memory clock of their video cards with the real clock rate used. To facilitate knowing and understanding the differences among major AMD (ATI) chips, we have compiled the following table. With more and more graphics chips being released every day, it became very complicated for the user who does not follow the video card market to know the differences among all AMD (ATI) graphic chips on the market today.