KV7-V & AMD Sempron 2200

Hi everyone

I've recently built a system with the KV7-V board and the AMD Sempron 2200.
At present the board will only clock the CPU at 910MHz.

I've tried flashing the bios with the latest version (1.5) and clearing the
CMOS with the jumper as described in the manual, assuming that this was a
problem that might have been resolved with an update, but that hasn't worked
so far.

I'm aware there may be some memory issues, I've got 2x512Mb @ 400Mhz FSB in
there. Could this be a cause of my problem?

Any help much appreciated!

 

No. The problem you have is that you have the FSB set to 100MHz. It should
be set to 166MHz for default speed, and if your board supports 200MHz or
higher set it to the max and raise vcore as needed, to at least 1.65v to
start. With a 200Mhz FSB you can get it up to an Athlon XP 2200+ speed of
1800MHz. At default speed the Sempron 2200+ runs at about the same speed
as an Athlon XP 1800+. IOW's, really slow. With a 9x multiplier, you'll
never reach the potential speed the cpu is capable of, unless you can get
the FSB up to 266MHz (533FSB in marketing BS terms)(2400MHz). I really
don't know much about the KV7-V board but you maye be able to get 233MHz
FSB out of if you're lucky, but I wouldn't count on anything over 200MHz
which it officially supports.

 

Sounds like the bios is defaulting to 100 MHz. The Sempron 2200
multiplier is 9x so the cpu would be running at around 900 MHz if the
FSB is at 100 MHz.
http://www.tomshardware.com/cpu/20041221/images/cpu_table_amd_big.gif
You should be able to manually set the bios FSB to 166 MHz.

Note that the memory clock is derived from the FSB clock. Hence an
FSB of 100 MHz causes the memory clock to lower itself to 100 MHz.
The bios memory page only allows you to lower the memory clock to
something less than a 1:1 ratio between the cpu clock and the memory
clock. eg., a 1:2 ratio would then cause a 50 MHz memory clock.

Also note that a memory clock of 166 MHz produces a memory data
transfer rate of 333 million memory transfers per second. Transfer's
per second is not the same as MHz. A 400 "MHz" memory clock is a
fictitious marketing ploy.

Forrest

Motherboard Help By HAL web site:
http://home.comcast.net/~mobo.help/