AN7 strange stuff

Just_C4 · 20th May 2006, 12:48 AM

February 2004 I bought an Abit AN7 together with a Kingston stick (KVR400X64C3512 (3-4-4) double sided) and until now there were no problems until I decided to make a RAM upgrade.

First I bought a dual channel Kingston (KVR400X64C3AK2512 (3-3-3) double sided) kit. After I installed the RAM the PC had serious stability and booting problems. I changed slots, relaxed timings to (3-4-4), used only one stick but still no go. I sold the sticks at a discount to a friend and they work fine in dual channel mode on an A7N8X-X Mobo. Prime95 and memtest86+ work fine.

So I decided to change brand and got 2x512 Kingmax PC3200 single sided (3-4-4 by SPD) with Kingmax chips.

Now the freaky stuff starts.
The two sticks work only in slots 1 and 2, together or separately, no problems with Prime95 and memTest. Of course there is no Dual Channel. In slot 3 the PC gets Prime 95 errors on both sticks. But the slot is not broken because the "old" Kingston stick works fine in there. So just for fun I put one Kingmax stick at a time in slot 1 and 2. And guess what? The dual channel works in all cases with Pime95 and all if I keep the "old" Kingston in slot 3.

How is this possible? I run standard BIOS settings ("by SPD" and "Auto"), No OC stuff. Are there some settings that need to be applied like change voltages and stuff?

System:
Barton 3000+
Abit AN7 (Bios 1.9, latest)
Leadtek GF6600GT AGP
PSU 450W (20A on 12V rail)

s p r a n k i k o · 20th May 2006, 03:00 AM

I once had an AN7. I was never even able to power it up.

I tried RMA'ing it but Abit never replied to my sister's emails. (mobo was bought in the US and my sister lives there) Anyway, I guess I'm not much help.

Maybe the new RAM's aren't compatible? I was also using Kingston Value RAM's when I still had the motherboard.

Just_C4 · 22nd May 2006, 02:27 PM

Strangly enough, according to the Abit site Kingston with Kingston chips respectivly Kingmax with Kingmax chips are compatible... More strange is how a RAM stick is compatible on all but one slot.

Just_C4 · 29th May 2006, 02:44 PM

Finally it works. I've set the DIMMS in slots 1 and 3, raised Vdimm to 2.7V and set the timings to 2.5-4-4-8.

s p r a n k i k o · 29th May 2006, 02:53 PM

Congrats!

Good to hear you were able to make it run!

20th May 2006, 12:48 AM	#1 (permalink)
Just_C4 Newbie Join Date: 20 May 2006 Posts: 3 Reputation: 0 Rep Power: 0	AN7 strange stuff February 2004 I bought an Abit AN7 together with a Kingston stick (KVR400X64C3512 (3-4-4) double sided) and until now there were no problems until I decided to make a RAM upgrade. First I bought a dual channel Kingston (KVR400X64C3AK2512 (3-3-3) double sided) kit. After I installed the RAM the PC had serious stability and booting problems. I changed slots, relaxed timings to (3-4-4), used only one stick but still no go. I sold the sticks at a discount to a friend and they work fine in dual channel mode on an A7N8X-X Mobo. Prime95 and memtest86+ work fine. So I decided to change brand and got 2x512 Kingmax PC3200 single sided (3-4-4 by SPD) with Kingmax chips. Now the freaky stuff starts. The two sticks work only in slots 1 and 2, together or separately, no problems with Prime95 and memTest. Of course there is no Dual Channel. In slot 3 the PC gets Prime 95 errors on both sticks. But the slot is not broken because the "old" Kingston stick works fine in there. So just for fun I put one Kingmax stick at a time in slot 1 and 2. And guess what? The dual channel works in all cases with Pime95 and all if I keep the "old" Kingston in slot 3. How is this possible? I run standard BIOS settings ("by SPD" and "Auto"), No OC stuff. Are there some settings that need to be applied like change voltages and stuff? System: Barton 3000+ Abit AN7 (Bios 1.9, latest) Leadtek GF6600GT AGP PSU 450W (20A on 12V rail)

20th May 2006, 03:00 AM	#2 (permalink)
s p r a n k i k o "0104" Join Date: 31 Aug 2005 Location: Manila Posts: 780 Reputation: 213 Rep Power: 6	I once had an AN7. I was never even able to power it up. I tried RMA'ing it but Abit never replied to my sister's emails. (mobo was bought in the US and my sister lives there) Anyway, I guess I'm not much help. Maybe the new RAM's aren't compatible? I was also using Kingston Value RAM's when I still had the motherboard. __________________ Main rig: Opteron 170/3Ghz \| DFI NF4 Ultra-D \| http://valid.x86-secret.com/show_oc?id=163569 OCZ Platinum Elite Edition 1Gb/2-3-3-5/1T \| EVGA7900GTO Secondary rig: Opteron 144/2.9Ghz \| Abit KN8 Ultra \| http://valid.x86-secret.com/show_oc?id=212009 Team Xtreme 1Gb/2-3-3-5/1T \| XFX7900GS

29th May 2006, 02:53 PM	#5 (permalink)
s p r a n k i k o "0104" Join Date: 31 Aug 2005 Location: Manila Posts: 780 Reputation: 213 Rep Power: 6	Congrats! Good to hear you were able to make it run! __________________ Main rig: Opteron 170/3Ghz \| DFI NF4 Ultra-D \| http://valid.x86-secret.com/show_oc?id=163569 OCZ Platinum Elite Edition 1Gb/2-3-3-5/1T \| EVGA7900GTO Secondary rig: Opteron 144/2.9Ghz \| Abit KN8 Ultra \| http://valid.x86-secret.com/show_oc?id=212009 Team Xtreme 1Gb/2-3-3-5/1T \| XFX7900GS

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22nd May 2006, 02:27 PM	#3 (permalink)
Just_C4 Newbie Join Date: 20 May 2006 Posts: 3 Reputation: 0 Rep Power: 0	Strangly enough, according to the Abit site Kingston with Kingston chips respectivly Kingmax with Kingmax chips are compatible... More strange is how a RAM stick is compatible on all but one slot.

29th May 2006, 02:44 PM	#4 (permalink)
Just_C4 Newbie Join Date: 20 May 2006 Posts: 3 Reputation: 0 Rep Power: 0	Finally it works. I've set the DIMMS in slots 1 and 3, raised Vdimm to 2.7V and set the timings to 2.5-4-4-8.