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Windows Forum / Windows 98 / Performance / September 2003DMA (Direct Memory Access)
Recently I did a performance test on my PC. It found that my C drive's performance was very low. One of the solutions was to enable DMA in the device manager. I did but there was a prompt that said changing the setting for it might cause my hard drive to perform weird. So I didn't do it. Does anyone know about DMA and it's intended use? Should I keep it disabled, or should I enable it like the test suggested? Thanks If it is a fairly new Hard Drive, try it. Usually if it will cause a problem, it will be unchecked after you reboot. Occasionally, it will cause a problem that may make your computer take 15min to boot up, but even so, once it does, just go back and take out the check mark. Should work just fine, unless you have your FSB overclocked. Enable it. PS: Don't use your real email address while in Newsgroups unless you love SPAM. > Recently I did a performance test on my PC. It found that > my C drive's performance was very low. One of the [quoted text clipped - 8 lines] > > Thanks Buy Computer with DMA controler. > Recently I did a performance test on my PC. It found that > my C drive's performance was very low. One of the [quoted text clipped - 8 lines] > > Thanks This reply is useless. Win98 -always- disables DMA mode, this can be or changed manually or changed by installing mainboard drivers (like VIA 4in1 / Hyperion , Intel .inf update, ...). And yes, if your drive is quite recent (most drives of 40GB and more are 'recent') you can enable it. And, if you're not afraid of looking inside a pc, open up your case, look for the harddisk, and check if the cable used to connect it to the mainboard (a flat grey/white cable) has 80 ribbons in stead of 40 ribbons (80 ribbon cables are necessary to use the faster & better ATA 66, 100 & 133 standards. If the cable is 40-ribbon, it uses ATA 33 standard) > Buy Computer with DMA controler. > > Recently I did a performance test on my PC. It found that [quoted text clipped - 9 lines] > > > > Thanks Where does it say that she has a problem implementing DMA? She just chose not to. She wasted her time writing evidently, but cause some people can't read. Dave > Buy Computer with DMA controler. > > Recently I did a performance test on my PC. It found that [quoted text clipped - 9 lines] > > > > Thanks Ok, a bit about DMA: It stands for "Direct Memory Access", and allows your Hard Drives to use your RAM-memory directly (in stead of having to 'ask' it to memory controllers). Older drives don't support it, but most drives nowerdays do. Windows 2K and XP (and ME, I believe) detect whether your drive is DMA capable and use it automatically. Win98 doesn't, for some reason. So you have to check if your drive is DMA capable, and if so, you can safely enable it. Also, as I mentioned in my previous post, it's possible to let most mainboards decide whether to enable it or not, by updating it's software. This, however, does not apply to all mainboards. Glenn. > Recently I did a performance test on my PC. It found that > my C drive's performance was very low. One of the [quoted text clipped - 8 lines] > > Thanks |
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