After having taken a long hard look at GPUs last fall, it is time, once again, to see what the graphics card vendors have to offer the world. We wanted to get our hands on as many cards as possible in order to put together a roundup of epic proportions.
There is more to buying a graphics card than an IHV's chip, and the tender loving care that the OEMs give their cards is where much of the end user value comes from these days. In this review, we will take a look at each card and what it has under the hood, along with its GPU. Beyond the gaming experience, we will be looking at fan noise and heat dissipation as well as which memory modules the vendor decided to use. Some of the cards are even pre-overclocked for our gaming pleasure.
We will see everything from two-fan cooling solutions to LCD temperature and fan speed readouts. After looking at what each card has to offer above and beyond the performance, we will put them all to the test. Obviously, if the cards all run at reference speeds, they will all perform similarly to earlier tests that we have already completed. We've got something more special in mind.
We are going to overclock each card to its highest stable core and memory speed, and then run a few select benchmarks to cover the most recent few DirectX releases as well as OpenGL. All told, 23 cards were benchmarked, so we didn't have the ability to run a whole suite of tests on each one.
Keep in mind, when looking at overclocking, that every single card is different. We are only hoping to get an idea of what a particular vendor's cards can do. Heat sink and fan selection are very important to overclocking, as is RAM cooling and board layout. Though these issues impact overclocking a great deal, they, alone, do not dictate success or failure at any given clock speed. Each GPU, RAM module, capacitor, etc. has different limitations, which can only be determined experimentally.
Beyond understanding what the vendors are doing, we will be able to glean a little more information about the IHV's GPUs. Hopefully, our tests will tell us what kind of speed increases we can expect from each core, and what impact core and memory clock speed have on performance. But that's enough talk. Take a look at the cards in our lineup.
UPDATE: As the performance tests in this article place a heavy weight on overclockability, it is important to note that the Radeon 9800 (R350/R360) based cards are fabbed on a 150nm process and will have a little more trouble overclocking than the 130nm parts that make up the rest of the cards we tested. Also, NVIDIA GPUs underclock themselves when running in 2D mode, so their idle temperatures will be lower on average than the ATI based solutions. We appologize for having omitted this information from initial publication.