Download Driver Amd Radeon Hd 7700 Series
The appearance on the market of video cards of the 7700 line happened in February 2012. And so two models were released 7750 and 7770. These were budget video adapters of the middle segment. The appearance of the entire 7700 line was a logical continuation of the release of the Radeon HD 7xxx series. The superlative model (at that time Hard disk 7950) came out a month earlier.
During the production of the unabridged line (February 2012 – August 2013), iv models of video cards related to the AMD Radeon Hd 7700 series were released. All of them were based on the same technical process and had very similar characteristics, although the difference in performance between the fastest and slowest cards in the line was almost threefold.
The caption 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.
To some extent, this made the 7700 series universal, since, on the i hand, the buyer could choose the operation he was interested in by purchasing a particular adapter. On the other hand, the presence of equally many equally four models with the same filling fabricated a lot of defoliation in the nomenclature of video adapters.
A similar confusion persisted in the side by side generation of AMD products – the R200 family unit, and but a couple of years afterward, with the advent of the R400, the situation with the classification improved markedly.
Therefore, until now, many AMD fans remember with horror the menstruum when, having confused only two digits in the adapter index, it was possible to seriously miscalculate the performance. For example, the functioning of the 7970 and 7790 differed past more than three times; and the performances of the 7750 and 7570 were almost the same.
AMD Radeon HD 7700 series specifications
AMD Radeon HD 7700 series cards have the following features:
- chip used – Cape Verde / Bonaire;
- technical process – 28 nm;
- chip frequency – 800/1000 MHz;
- memory frequency – 1125 MHz;
- used memory – GDDR5, 1 or ii GB;
- data bus width – 128 $.25;
- hardware API support – Direct X 11.1, partially 12.0; OpenGl – 4.2; OpenCl – 1.2;
- interface – PCIEx16 five 3.0;
- ability consumption – from 47 to 85 watts.
At the time of its appearance, these cards met the about mod requirements for hardware and software compatibility with all existing means for creating computing systems at that time.
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Differences Between 7700 Series Models
The main differences inside 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.
Attention! On AMD cards, the cadre configuration is described past three numbers:
- the number of unified shader processors (UWP);
- the number of texture units (TB);
- the number of rasterization blocks (BR).
The chief contribution to performance is made by UWB.
So the 7700 series video adapters had the following core configurations:
- Radeon HD 7730: UWB – 384, TB – 24, BR – 8.
- Radeon Hard disk drive 7750: UWB – 512, TB – 32, BR – 16.
- Radeon HD 7770: UWB – 640, TB – 40, BR – 16.
- Radeon HD 7790: UWB – 896, TB – 56, BR – 16.
There were also minor differences in the series. So the flake frequencies in the 30th and 50th models were artificially lowered to 800 MHz (instead of chiliad MHz in the 70th and 90th models). In addition, 7790-based cards had 33% faster memory (1500 MHz instead of 1125 MHz).
For the remainder of the characteristics, the adapters under consideration were absolutely identical.
Graphics Card Specifications
The Radeon HD 7770 was arguably the virtually popular in the entire 77xx line, as it combined sufficient performance at an affordable toll. At the time of release, the price for one shader (UWB) was nearly $ 0.19 and was the everyman in the entire 77xx series.
Until now, 7770 cards tin exist institute on sale, mainly in the secondary market. Still, taking into account the fact that at that place are besides new ones, we tin conclude that the model turned out to be quite “tenacious”, despite the age of vii (the date of the map was released on 15.02.2012).
This video card is based on the Capo Verde XT chip containing ane.five billion transistors. The crystal area is 123 sq. mm. The menu uses 1GB GDDR5 memory clocked at 1125 MHz (4500 MHz effective). The width of the data bus is 128 bits.
With these parameters, the retentiveness bandwidth is most 72 GB / s.
The summit fill charge per unit is 16 GPix / s or forty GTex / south.
The theoretical performance in FP32 is about one.28 TFlops, which is quite good for a card budgeted seven years old.
The bill of fare is fully uniform with the DirectX-eleven API and partially uniform with DirectX-12.
For comparison with NVidia, it can exist noted that its “analog 7770 in the middle segment”, namely the GTX750 card, which has similar characteristics (512 scalar processors and functioning
FP32 at 1.044 TFlops), they were able to do information technology only in February 2014, that is, two years after than AMD. This means that AMD had no competitors in this price segment for two years.
Attention! When evaluating the performance of cards from AMD and NVidia, keep in mind that AMD universal shader processors are non the same as NVidia scalar processors (the and then-chosen CUDA). On boilerplate, UWB operation is 20% less than CUDA.
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Radeon HD 7700 Series Graphics Accelerators
Based on the 77xx series, many models from various manufacturers take been released. Accelerators from Gigabyte were the most diverse. They were produced both in the reference configuration and with slightly overclocked scrap and memory frequencies.
Separately, it should be noted the products of Asus, which produced about the entire line with 2 GB retentivity.
Graphics accelerators from MSI were equipped with quite good software that allowed to automatically select the overclocking parameters of video adapters.
Architectural features
The primary characteristic of the unabridged 77xx series was that all the models that were included in it were based on the Graphics Core Adjacent or GCN architecture. 77xx cards were among the first to implement GCN version 1.0
AMD currently has its 4th version of GCN. Moreover, unlike NVidia, which has changed its approach to architecture twice over the by 5 years (switching from Maxwell to Pascal, and so again to Maxwell, which was chosen Turing for dazzler), AMD does not change the compages, but only modifies the existing i.
And if at the same time AMD products remain competitive in comparison with NVidia products, this indicates a very successful architectural solution constitute back in 2012.
Another of import architectural feature of the 77xx series was that its top-finish 7790 was one of the kickoff cards to support the Mantle API. Namely, the emergence of Mantle prompted Microsoft to make significant improvements to its DirectX.
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Overclocking AMD Radeon HD 7700 series
The overclocking characteristics of fries with GCN 1.0 architecture are very expert.
Commonly, when using air or liquid cooling, information technology was possible to achieve a scrap frequency of about 1270 MHz, which corresponded to an overclocking of + 27%.
Retentiveness overclocking was much better. Peak values of the memory frequency were 1630 MHz, which was equivalent to overclocking + 45%. However, it should exist noted that such overclocking is quite mutual for GDDR5.
