The 4800 series Graphics cards by today's standards are obsolete. They are at the time of release was quite an interesting decision today, however, is suitable only for older systems, whose main task involves surfing the Internet and work with multimedia programs. Features ATI Radeon HD 4800 Series cards do not allow this series to provide performance in games, especially today.
This is the first card in the line ATI Radeon HD 4800 Series, the characteristics of which at the time of the announcement was good. The operating frequencies of the core - 625/1986 MHz. The card has GDDR3 memory (obsolete today) with capacity of 512 MB and a 256-bit bus.
Also here is used a good RV770PRO GPU with 956 million transistors. This is much more than the processor of the previous generation – RV770PRO (there were 666 million transistors). So it's safe to say that the company is ATI (now AMD) has made a fairly big leap in terms of increased productivity. The chip is made on 55-nm standards. At that time it was fine, but now modern cards run at 16-nm process that allows you to place in the kernel a lot more transistors.
Graphics supports DirectX 10.1, but not DX11. Features ATI Radeon HD 4800 Series close to the parameters of the model 9800 GTX from Nvidia. This video card is opponent. When testing both models in Crysis, they showed approximately equal results. And while the HD 4850 from AMD is a cheaper solution compared to the competitor, because of what wins in this dispute.
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Let's Not forget that the card is HD 4850 in this series are not the only one, there are others.
Features ATI Radeon HD 4800 Series, particularly the HD 4870 card, the better, because by itself, this model is faster and more expensive version. It has no architectural or processor changes, but its working frequency is higher.
The Only major change in favor of the HD 4870 graphics – a new memory standard GDDR5. She let without improving the tire (tyre and stayed with the bit width of 256 bits) to increase the capacity of the graphics card, and much more. If the bandwidth of the HD 4850 was of 63.6 GB/s, the card is HD 4870, this value increased to 115.2 GB/s. the Charge for this - the higher price of the graphics card, and increased to 160 W power consumption. This features ATI Radeon HD 4800 Series (HD 4870) end. But there is in the line of another video card.
After the release of the two solutions created in the process of 55 nm, people started to discuss the possible issuance by the company of ATI new graphics on the basis of the improved processor Super RV770. Indeed, very soon the manufacturer has announced a new map on the basis of improved chip RV790 GPU.
New solution is expected has received the name of the HD 4890, and here is the updated GPU. As a result, the map became faster due to the fact that operates at high frequencies, compared with the previous in the line model. The most important competitor of the graphics card is Geforce GTX 275, which was released the same day.
And although the manufacturer says that the main objective was to create a new GPU, which would become the leader in the upper price segment, improved chip RV790 is just an improved version of the RV770. No other changes to the graphics card not. Even the manufacturing techniques and capabilities have remained the same, architectural changes are also absent. Probably AMD tried thus to show that they do not lag behind the competitor, which produces new and advanced solutions.
Features ATI Radeon HD 4800 Series (HD 4890):
After the release of the reference sample, many manufacturers partner created their own solutions based on this chip. However, they all turned out about the same and was a reference the products by AMD ordering. That is, the partners just buy ready cards from AMD, stuck their stickers and put it on the market as products of own production. In fact, the difference between the cards from Sapphire, HIS or Powercolor is practically absent, therefore the question here the choice lies only in price.
Moreover, all these products are equipped with the same cooler and have a similar cooling system.
From AMD with the release of this card has turned out to enhance the range of products 4xxx series and almost close to the flagship from Nvidia (we are talking about the card Geforce GTX 285). However, Nvidia is also not lagging behind and created an improved version of Geforce GTX 285, which had a 448-bit bus. It is possible to reduce the memory from 1 GB to 896 MB, but with an increased bandwidth. New graphics Geforce GTX 285 from Nvidia was a little better, but this product was limited edition, and the AMD graphics card was delivered to the market in large volume.
Note that at the time of memory features ATI Radeon HD 4800 Series was quite serious. But now these cards are no longer available, and they can be used only in older computers. By modern standardseven the Radeon HD 4890 is the outdated graphics, which is not able to satisfy users requests, not to mention gamers. However, at the time the map was popular and even today is actively used in computers for everyday use and surfing the Internet.
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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."
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