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Tests: Vista SP1 worsens HD, network speed

updated 04:00 pm EST, Thu December 27, 2007

Vista SP1 Slows Down

The looming Service Pack 1 update for Windows Vista has deteriorated the Microsoft operating system's disk and networking performance beyond the already slow launch version, according to a series of tests conducted by Gizmodo. The software is notably faster than its six-year-old XP predecessor in general performance on a new quad-core Xeon system, besting the earlier OS in CPU-heavy tasks such as video encoding as well as 3D tasks. However, the Vista update is also shown to suffer dramatically in heavy network use: a transfer that would take just over 3.5 minutes in XP takes nearly 13 minutes with Vista circa January 2007 and actually deteriorates further to more than 15.5 minutes for the SP1 fix, the tests show.

The benchmarks are also said to indicate artificially reduced hard disk speeds, dropping from XP's 119/123MB per second in read/write bandwidth to just 83/61 in Vista and an even lower 80/53 with the Vista Service Pack. The transfer seems to slow down towards the end despite using high-speed 15,000RPM hard drives, according to observations.

Microsoft has not explained the discrepancies but is believed to be at least partly responsible, having rewritten significant portions of Vista's code for networking and other features. Drivers for storage devices are not discussed in this latest test but also have the potential to slow down hard drive speeds by themselves.

by MacNN Staff




  1. henjin

    Joined: Dec 1969


    No speed hit in Vista

    Well non I can see having XP/Vista/OSX it's all about the same. I've had occasion to have all 3 systems downloading Adobe products which are really slow to download.

    I'm sure the tests are real but frankly in real life I don't see the problems now that have been described.

    I do notice slow reading of disks in Vista but then it's no worse than Leopard.

    I will point out that Gaming with Vista Ultimate is amazing, so how is that possible if the disks are that slow? Also I play on a network... no slowdown.

    Interesting. very good warning not to upgrade before all the bugs are announced.

    Leopard and Vista the twins.

    Glad I am platform agnostic.

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