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Abit AV8 and XMS Twin 1024 PC4400


barry6743

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I have recently added TwinX PC4400 (512X2) RAM to my machine replaceing the Corsair VS PC3200 RAM previously installed to try and get a stable machine at 275mHzx9.. I don't know what the exact problem is but as soon as I start playing any of the games I have the machine will lock-up at any speed over 250mHzx9. If I am only surfing the web or listening to music things run well at the higher speed but as soon as I start any graphics intensive application the PC freezes. I have also tried some XXX 4200 (256x2) with the same results. I have tried loosening the RAM timings to 3-6-6-10. No joy. Any suggestions would be appreciated. Thanks.
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Indeed I would set HTT to 3X, up the RAM voltage to 2.8, run DDR333 and use the divider so AGP is set to 66Mhz. I can go to 243Mhz with my 3200XL memory at 2.5-3-3-6 with 10 multiplier, HTT 4X and 1T at DDR400 setting but any higher and the system because very unstable. But a 400 mhz gain is already nice with an A64 3000.

This is a nice article regarding stuff to OC an AMD64 CPU and it's your version AMD64 3000 :

 

http://www.neoseeker.com/Articles/Hardware/Guides/athlon64oc/index.html

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What do you have the HTT Frequency set to?

The HTT setting which works for me is FSBx2, normally one should use FSBx3 with anything over 260 but that setting is known to be buggy in the AV8. I have also tried using another good brand name PC4200 (256x2) but this also failed to deliver the promised frequency rating. I use the general settings suggested in the second reply with RAM voltage, AGP/PCI lock with the multiplier set at 9 (the highest the 3000 can reach). There is a program called uGuru Auto-Drive which can be set to run designated programs at certain settings (lower, usually the base line or Turbo for the processor) which allow the games to be played but this skirts the issue without fixing it. I'm stuck for now. Thank You for your replies and keep them coming.

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do yo use the 66MHZ AGP lock or do you use the dividers, the lock is apparently not working correctly on most AV8 boards, also what bios are you on ? I heard some news of a beta 20 release some have good results others are having pure hell with it.

 

Can you give us a complete rundown what settings you are doing ? ( yes there are a lot of settings in the Abit's Bios )

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And to add to that, you may really need a bigger PSU especially to Over clock. But you are probably just at the top end of you system.

I use the AGP/PCI lock below 260mHz and the 8:2:1 divider above. I just installed the BIOS #20 and will let you know if it helps or not. I have been planning for a larger PSU since I feel that this one may be at least part of the problem. It will be a week or so before I can get one though.

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I love my 2 Enermax PSU's and have build many rigs with the Noisetaker series from Enermax : EG495AX-VE (W)SFMA (providing enough juice to the 12 volt rail.) I myself have an Enermax Noisetaker 701 (600 watt version), it's SLI ready and ATX2.01 so it should be futureproof. Many users think the split 12 volt rail is no good, just needs some tinkering when hooking up, I haven't had any issues with them yet, build mostly 3500-3800 CPU rigs with GF6600, 6800series GPU's and beefy HD's.

Glad you already aware that a good PSU cost's a lot of money. Many users get a 550 watt for 30 quid or so being dissapointed in the long run. Just stay away from Antec PSU's when you have an ABit mobo, apparently there have been probs with some series and luckily Antec was willing to replace those PSU's

 

Overclockers.com also did some research in AMD64 OC'ing here's his summary

 

http://www.overclockers.com/tips00772/

 

Maybe your ram doesn't work to it's full potential since it is tested in the Intel rigs and certified for those chipset based platforms. AMD64 are another cup of tea and maybe you need to settle for a lower OC then you want , but I still think it's a good OC , 400MHz and maybe thighter timings will blow away your friends rigs. For socket 939 AGP boards AC'ing the Nvidia chipset is master. Did you visit Abit USA forums mate ? ( http://forum.abit-usa.com/ )

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I love my 2 Enermax PSU's and have build many rigs with the Noisetaker series from Enermax : EG495AX-VE (W)SFMA (providing enough juice to the 12 volt rail.) I myself have an Enermax Noisetaker 701 (600 watt version), it's SLI ready and ATX2.01 so it should be futureproof. Many users think the split 12 volt rail is no good, just needs some tinkering when hooking up, I haven't had any issues with them yet, build mostly 3500-3800 CPU rigs with GF6600, 6800series GPU's and beefy HD's.

Glad you already aware that a good PSU cost's a lot of money. Many users get a 550 watt for 30 quid or so being dissapointed in the long run. Just stay away from Antec PSU's when you have an ABit mobo, apparently there have been probs with some series and luckily Antec was willing to replace those PSU's

 

Overclockers.com also did some research in AMD64 OC'ing here's his summary

 

http://www.overclockers.com/tips00772/

 

Maybe your ram doesn't work to it's full potential since it is tested in the Intel rigs and certified for those chipset based platforms. AMD64 are another cup of tea and maybe you need to settle for a lower OC then you want , but I still think it's a good OC , 400MHz and maybe thighter timings will blow away your friends rigs. For socket 939 AGP boards AC'ing the Nvidia chipset is master. Did you visit Abit USA forums mate ? ( http://forum.abit-usa.com/ )

 

 

I am mostly disappointed that under non-graphics intensive applications the machine runs fine yet fails when playing games. Yes, I am a member of the Abit-forum (same user ID). Personally, I don't think RAM should qualify as certified unless it will do so on both AMD and Intel platforms. Long gone are the days when AMD's would only OC 20-40 mHz.

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Well hold on a bit till you get the new PSU, maybe it will run fine then. The ram was produced long before there was any talk of an AMD 64, it was tested on Intel and AMD XP platforms. It's on the webbie. The Bios 20 didn't solve anything ?
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Well hol don a bit till you get the new PSU, maybe it will run fine then. The ram was produced long before there was any talk of an AMD 64, it was tested on Intel and AMD XP platforms. It's on the webbie. The Bios 20 didn't solve anything ?

 

 

No joy on any improvement from the new BIOS. I'm looking at either an Antec TruePower 550 or a Pc Power and Cooling 510 ATX (if I can swing the bucks angle)

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Well both provide plenty of power but if you buy a decent PSU now I would opt for one that has SLI capability (meaning 2 PCI Express connectors on it) jus tto make sure you ain't gonna have to buy extra connectors,... next year when you want to go PCI-E.

 

like eg ENERMAX EG565AX-VEFMA2.0-SLI 535W Power Supply 115 bucks at Newegg ( http://www.newegg.com/Product/Product.asp?Item=N82E16817103462 )

 

Antec NeoPower 480W Power Supply ( http://www.newegg.com/Product/Product.asp?Item=N82E16817103924 )

 

This a good read up mate : http://www.overclockers.com.au/article.php?id=359867

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Well both provide plenty of power but if you buy a decent PSU now I would opt for one that has SLI capability (meaning 2 PCI Express connectors on it) jus tto make sure you ain't gonna have to buy extra connectors,... next year when you want to go PCI-E.

 

like eg ENERMAX EG565AX-VEFMA2.0-SLI 535W Power Supply 115 bucks at Newegg ( http://www.newegg.com/Product/Product.asp?Item=N82E16817103462 )

 

Antec NeoPower 480W Power Supply ( http://www.newegg.com/Product/Product.asp?Item=N82E16817103924 )

 

This a good read up mate : http://www.overclockers.com.au/article.php?id=359867

 

I have had a chance to test the new BIOS and can now acheive a STABLE oc of 265MHz. At 27- the machine reboots and may be because the AGP/PCI lock is not working at that point. If I use the8:2:1 divider at 270 MHz the agp card is run out of frequency (68MHz) and may be the culprit. I am still planning on picking up a better PSU soon also.

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  • 2 weeks later...
Well nice, well 68 Mhz shouldn't pose a prob really but I think the Extra OOmph given by the PSU could help a little bit to get your Magical 275 :)

 

 

I found that by dropping the LDT mult from x3 to x2 and increasing the voltages by .1v all around that the magic 275MHz was now stable.

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Great news and thanks for letting us know!

Apparently I was premature in my rejoicing. When I turned the computer on this morning I was back to square one again. Maybe it is not a morning person (l'm not either). I considered pouring some coffee into it (it works for me) but I reconsidered. I will just wait for the new PSU and hope that fixes everything. Oh well......

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If the system is more stable at these settings that can maybe confim it may be the PSU. But when you get the new PSU please remember to reset the bios.

I have reset the BIOS so often lately that I could probably do it in my sleep so no problem there.The system is rock solid stable at 250MHz. The best score in 3DMARK05 is now 5142 with the DNA Force 71.xx drivers. These are from the download section of http://www.overclockers.com and are much better in my machine than the stock nVidia 71.82 drivers that they are based on. Those were always giving me problems at any speed. I will post the new responses when I get the new hardware installed. Thanks for all of the suggestions, Bye for now, Barry Jones.

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