News

Windows 7 Bulldozer patch here again

Some of you may remember that AMD FX processors use a unique dual-core module architecture codenamed “Bulldozer”, which current versions of Windows® 7 were not specifically architected to utilize.  In essence, for those with an AMD FX-8150 Processor, for example, Windows 7 sees the eight available cores and randomly assigns threads to them.

In initial testing of the upcoming Windows 8 operating system, we’ve seen performance improvements of up to 10% in some applications, when compared to Windows 7. This is because the system correctly recognizes the AMD FX processor architecture and cores. Thanks to close collaboration between Microsoft and AMD, Microsoft recently completed back-porting some of the Windows 8 scheduler code for AMD FX processors into a hotfix for Windows 7.

So if you have an AMD FX processor, here’s what you can do to update your version of Windows 7:

1)    Download the scheduler update (KB2645594) and install.  This will tell the scheduler that your AMD FX processor contains dual-core modules (in fact this is similar to the SMT path that the other guys use). In essence, threads 1-4 now get assigned to their own module first.

2)    Download the core parking scheduler update (KB2646060) and install.  This will prevent Windows 7 shutting down unused cores prematurely when there are threads to be assigned (there’s a performance penalty parking and then un-parking a core).

The best possible cases for improvement are applications that use ½ cores in your AMD FX processor. In our testing using the AMD FX-8150 processor, we found the best improvement in wPrime, Left 4 Dead 2, and Lost Planet. Below you’ll find links to the patches:

Patch 1

Patch 2

Our testing shows that not every application realizes a performance boost. In fact, heavily threaded apps (those designed to use all 8 cores), get little or no uplift from this hotfix – they are already maxing out the processor.  In other cases, the uplift averages out to a 1-2 percent uplift. But heck, it is free performance, and this is the scheduler model that will be used in Windows 8 (along with some further enhancements), so why not add it to your list of downloads?

If you have an AMD FX processor, head over to Microsoft and grab the free updates.

Source: AMD

Ryan Martin

Disqus Comments Loading...

Recent Posts

Plaion Launches Retro ZX Spectrum Computer

Plaion, a leading video game publisher, and Retro Games Ltd., a specialist in reimagined classic…

19 hours ago

NVIDIA Warns of GeForce RTX 40 Graphics Card Shortages in November and December

During the latest earnings call, NVIDIA CFO Colette Kress warned of a potential GPU supply…

21 hours ago

GeForce RTX 5090, RTX 5080, RTX 5070 Ti, and RTX 5070 Reportedly Coming in Q1 2025

Chinese sources say the GeForce RTX 5090, RTX 5080, RTX 5070 Ti, and RTX 5070…

21 hours ago

GTA 6 Already Winning Awards Before Its Launch

GTA 6 doesn’t have an official release date yet, but it has already earned a…

1 day ago

DJI Osmo Mobile 6, 3-Axis Phone Gimbal

Stay on Point with ActiveTrack 6.0 - With upgraded tracking tech, OM 6 sticks to…

1 day ago

Drayton Wiser Smart Radiator Thermostat TRV

Pack includes three Wiser Radiator Thermostats. These smart radiator thermostats are only designed to work…

1 day ago