The current implementation will work with DX10 and DX11 based titles only with DX9 support being added later with another release. This fix is generic meaning it is not tied to any specific game and doesn't require profiles like CrossFire can from time to time.
7990 crossfirex driver#
The driver monitors this constantly in real-time and minor changes are made on a regular basis to keep the GPUs in check.Īs you would expect, this algorithm is completely game engine independent and the games should be completely oblivious to all that is going on (other than the feedback from present calls, etc). This balances or "paces" the frame output to the screen without lowering the overall frame rate. The software team has implemented a software based frame pacing algorithm that simply monitors the time it takes for each GPU to render a frame, how long a frame is displayed on the screen and inserts delays into the present calls when necessary to prevent very tightly timed frame renders. Starting with 13.8 and moving forward, AMD plans to have the frame pacing fix integrated into all future drivers. Also, we found some issues with more than two GPU CrossFire that we'll address in a later page too. For example, this fix will not address Eyefinity configurations which includes multi-panel solutions and the new 4K 60 Hz displays that require a tiled display configuration. It's not perfect yet and there are some things to keep an eye on.
7990 crossfirex update#
Today could be a very big day for AMD – the release of the promised driver update that enables frame pacing on AMD 7000-series CrossFire configurations including the Radeon HD 7990 graphics cards with a pair of Tahiti GPUs. The problem was that the driver wouldn't be available until summer.Īs I said then: "But until that driver is perfected, is bug free and is presented to buyers as a made-for-primetime solution, I just cannot recommend an investment this large on the Radeon HD 7990." The HD 7990 depends on CrossFire technology to function and we had found quite a few problems with AMD's CrossFire technology over the last months of testing with our Frame Rating technology, the HD 7990 "had a hard time justifying its $1000 price tag." Right at launch, AMD gave us a taste of a new driver that they were hoping would fix the frame pacing and frame time variance issues seen in CrossFire, and it looked positive. When the Radeon HD 7990 launched in April of this year, we had some not-so-great things to say about it.
Frame Pacing Setting: Enabled vs Disabled.AMD has finally released the 13.8 driver that introduces frame pacing for AMD CrossFire.
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