ATI Radeon HD 4770 review -
What we need to do is verify that the image quality between ATI Radeon and NVIDIA GeForce cards are pretty much the same so we can objectively measure performance.
Now looking closely you'll notice a little color-tone difference. This scene has a lot of fog consistently moving from the right to left, which is the cause of that color tone difference. You can actually see that if you look at the end of the road and then compare with the Radeon shot. Due to resizing the images from 2560x1600 to ~ 600 pixels wide makes this a difficult thing to show.
Anti aliasing at 4xAA
The reality is that there is very little difference to spot with the naked eye. AA however is managed slightly differently between ATI and NVIDIA. Let me show you:
Now to the left ATI's AA pattern, to the right NVIDIA's. NVIDIA does have slightly better softer edges. But mind you, this is a crop from a tree/branch at 2560x1600, and then then magnified 300%.
High resolution textures and filters
For the second image quality check we take Brothers in Arms: Hell's Highway. No AA here, we focus on texture filtering and texture quality.
As you can see the differences between the two brands is astonishingly similar. Color tones can be a little different by the way. BIA has an interactive rendering engine with clouds and lighting.
Look at the more textured objects like the backpack and compare that among the two. No difference. The same for the helmet and the logos on there. This constant quality applies throughout the scene. Again this is a crop taken from a 2560x1600 sized screenshot. So the only difference I could spot is the roof of the shed in the back. I just have a really hard time deciding whether that is a result of texture filtering, or just a distortion.
Today we have another bang for buck product, a product that I like very much. As what ATI is doing today is pretty remarkable. They are releasing the Radeon HD 4770, a mainstream product at a budget price. Trust me when I say that after reading this review, you will be impressed.
ATI Radeon HD 4550 512MB review
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AMD ATI Radeon HD 4870 1024MB review
Today a test and review on the new AMD ATI Radeon HD 4870 1024MB. Obviously ATI is releasing a 1GB model to compete with the new Core 216 version of that GeForce GTX 260. The 4870 series really diggs that GDDR5 memory bandwidth, and what's the cheapest thing to do to gain some extra performance ? Increase the framebuffer volume. Now that by itself is not going to work miracles, yet in memory limited situations (loads of high quality textures, filtering and AA modes) it will help you here and there. And a little bit of extra bite is all the product needs to get beat that Core 216 card again.
ATI Radeon HD 4670 review
We test the ATI Radeon HD 4670. A nice little card that packs some decent punch in the value minded consumers.