Front Side Bus

merovaine · May 14th, 2001

My 850 T-Bird has FSB speed (When i Use sisoft sandra) 2x 100MHz (200MHz data rate)
is this normal?

May 14th, 2001

Yup.

cairey · May 14th, 2001

You have a DDR system yeah. Double Data Rate! You have DDR Memory, which is effectively double the cycle of SDR.

May 14th, 2001

He doesn't have DDR SDRAM, the Athlon's FSB is DDR due to the EV6 bus.

merovaine · May 19th, 2001

Also, how do u determine the UDMA ur IDE device is running at?
if there's such a thing that is..

merovaine · May 19th, 2001

Also, how do u determine the UDMA ur IDE device is running at?
if there's such a thing that is..

cluthu · May 19th, 2001

>Also, how do u determine the UDMA ur IDE device is running at?
Given that I don't have your mobo/proc setup, I can't say for certain, but most BIOSes will tell you at start up (most likely after the device detection phase). Often it'll list your proc speed, memory found, the status of your cache, as well as your IDE devices where they're found on your IDE chain, and the mode they're using. For example, on mine it reads something along the lines of:

Pri. Chan. Master: WD-xxxxx,LBA,66
Pri. Chan. Slave: Tobisha DVD-ROM,33
Sec. Chan. Master: Velo CDR,66
Sec. Chan. Slave: WD-xxx,LBA,66

The numbers at the end signify the UDMA mode that the device is operating at. Note that the "Pause/Break" key often works at this stage, so if you'd like to halt output, hit it and take a gander.

Note that just because a device you have might be using a particular mode doesn't mean that Windows is using it. For example, every time I install Win2k it uses PIO mode for my Velo despite it being perfectly capable of doing DMA transfers.

merovaine · May 21st, 2001

Can u change the UDMA mode or is it set by the device itself? I checked and both my CD-ROMs are running at udma 33 or whateva. Is it normal? or can i get it up to 66?

May 14th, 2001	#1 (permalink)
merovaine Registered User Join Date: Apr 2001 Posts: 42	Front Side Bus My 850 T-Bird has FSB speed (When i Use sisoft sandra) 2x 100MHz (200MHz data rate) is this normal?

May 14th, 2001	#3 (permalink)
cairey Registered User Join Date: May 2001 Location: England Posts: 215	DDR You have a DDR system yeah. Double Data Rate! You have DDR Memory, which is effectively double the cycle of SDR.

May 19th, 2001	#7 (permalink)
cluthu Registered User Join Date: May 2001 Posts: 513	>Also, how do u determine the UDMA ur IDE device is running at? Given that I don't have your mobo/proc setup, I can't say for certain, but most BIOSes will tell you at start up (most likely after the device detection phase). Often it'll list your proc speed, memory found, the status of your cache, as well as your IDE devices where they're found on your IDE chain, and the mode they're using. For example, on mine it reads something along the lines of: Pri. Chan. Master: WD-xxxxx,LBA,66 Pri. Chan. Slave: Tobisha DVD-ROM,33 Sec. Chan. Master: Velo CDR,66 Sec. Chan. Slave: WD-xxx,LBA,66 The numbers at the end signify the UDMA mode that the device is operating at. Note that the "Pause/Break" key often works at this stage, so if you'd like to halt output, hit it and take a gander. Note that just because a device you have might be using a particular mode doesn't mean that Windows is using it. For example, every time I install Win2k it uses PIO mode for my Velo despite it being perfectly capable of doing DMA transfers. __________________ "...everything else is just theory." Last edited by cluthu; May 19th, 2001 at 19:36.

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May 14th, 2001	#2 (permalink)
CDBuRnOuT Guest Posts: n/a	Yup.

May 14th, 2001	#4 (permalink)
CDBuRnOuT Guest Posts: n/a	He doesn't have DDR SDRAM, the Athlon's FSB is DDR due to the EV6 bus.

May 19th, 2001	#5 (permalink)
merovaine Registered User Join Date: Apr 2001 Posts: 42	Also, how do u determine the UDMA ur IDE device is running at? if there's such a thing that is..

May 19th, 2001	#6 (permalink)
merovaine Registered User Join Date: Apr 2001 Posts: 42	Also, how do u determine the UDMA ur IDE device is running at? if there's such a thing that is..

May 21st, 2001	#8 (permalink)
merovaine Registered User Join Date: Apr 2001 Posts: 42	Can u change the UDMA mode or is it set by the device itself? I checked and both my CD-ROMs are running at udma 33 or whateva. Is it normal? or can i get it up to 66?