8RDA+ who is responsible?

[stinger]

I always buy qualite when I'm upgrading to new stuff so this time I bought xp2700, Epox 8RDA+, Corsair 3502 V1.1, Radeon 9700pro The first thing that happens is that my xp2700 died. So I bought a new xp2400, at first everything seem ok at stock speed and after some burnin (cpu, ram) I started to raise my fsb and then the troubles started. I'v spend the last week and weekend (Day and night) to figure this out. Wtf is wrong here? I have a memory that is tested at 217mhz fsb and it wont run over 200mhz stable??? I can run prime95 and pifast at 195mhz but I cant run 3dmark?? agplock at 66mhz. I tried every bios and every setting I can think of but nothing. Why doesnt 8rda+ run at 200mhz?? now I'm tired of this so if I try this memstick in another board and it will run 210mhz then the board isnt good right? And how come the mem-alternatives in bios doesnt work? If I set my fsb to 165 and mem 120% then my memory would be 198mhz right? It says so when I'm booting up but how come I'm only getting 2600 in sandra but if I run 195mhz sync I'm getting 3050. Does any1 have any suggestions what I can do here? There must be a way to get this thing to fly. Please post your experiences so we can solve this once and for all.

[Soldier2000]

Originally posted by stinger
I always buy qualite when I'm upgrading to new stuff so this time I bought xp2700, Epox 8RDA+, Corsair 3502 V1.1, Radeon 9700pro The first thing that happens is that my xp2700 died. So I bought a new xp2400, at first everything seem ok at stock speed and after some burnin (cpu, ram) I started to raise my fsb and then the troubles started. I'v spend the last week and weekend (Day and night) to figure this out. Wtf is wrong here? I have a memory that is tested at 217mhz fsb and it wont run over 200mhz stable??? I can run prime95 and pifast at 195mhz but I cant run 3dmark?? agplock at 66mhz. I tried every bios and every setting I can think of but nothing. Why doesnt 8rda+ run at 200mhz?? now I'm tired of this so if I try this memstick in another board and it will run 210mhz then the board isnt good right? And how come the mem-alternatives in bios doesnt work? If I set my fsb to 165 and mem 120% then my memory would be 198mhz right? It says so when I'm booting up but how come I'm only getting 2600 in sandra but if I run 195mhz sync I'm getting 3050. Does any1 have any suggestions what I can do here? There must be a way to get this thing to fly. Please post your experiences so we can solve this once and for all.

There are al lot of people who have problems with running 200fsb including me.

Maybe a new bios helps.

[Daniel ~]

stinger, hello. There are a ton of posts in this topic and in the "AMD Mother boards and CPU" topic you can reference.

I'm sure someone with success with this board will come along shortly to help you out. Hang tough, most people are having pretty good success with this board. The new settings have caused a lot of frustration, but our members have pretty much got a handle on them now

Good luck!

[Toasted Comp]

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The NB cooler ...that is what most likely is keeping you back, it was for me.Just go get a Crystal Orb and some AS3 and you should be able to hit 200+ FSB.
It worked for me

[stinger]

That was the first thing I did when I got the board I always does that, And I have a 80mm fan that blows at it. The sad thing is that I'm reaching the same fsb with this 8rda+ and corsair 3500 that I did with my 8k5a2+ and 3:rd party pc3200 I would have hoped for a little higher fsb

[SteveI]

Originally posted by stinger
..... And how come the mem-alternatives in bios doesnt work? If I set my fsb to 165 and mem 120% then my memory would be 198mhz right? It says so when I'm booting up but how come I'm only getting 2600 in sandra but if I run 195mhz sync I'm getting 3050. Does any1 have any suggestions what I can do here? ......

Well, you're running asynch.. sisoft tests the bandwidth from the CPU to the Memory, so it can vary by CPU speed as well. running synch the way you mention, the CPU is the bottleneck, and your score will be lower than if you run synchronously. Your scores seems to be in line with what I'd expect. I don't have your board, but a friend does. There's a whole lot of flexibility in the bios. Just a thought, but if you have your memory set too aggressively, it may not be stable. From what I've heard, you can run your memory much more agressively than with any other mobo atm.

[stinger]

async= 15X165mhz=2475mhz mem=198mhz
sunc=12.5X196mhz=2450mhz mem=196mhz

Where is the bottleneck????

[Galifrey]

the bottleneck is the latency of wasted clock cycles between CPU fsb and memory speed...

Some have stated that at HIGH fsb 200ish, the SB gets quite hot, and adding a cooler to the MCP-T helps this...

May be worth a try... have you checked how hot your MCP-T gets under load at high FSB?

[stinger]

I'll check it out, every tip is welcome, but I think after this I'v tested almost all I can think of. No there is one thing left I'v read on some forum that some guy couldent run stable over 195mhz and then he took the 133/166 jumper of after that he was able to run 217mhz fsb stable, shall test it out when I get home, even if it sounds to good to be true.

[Caper]

That sounded to good to be true, yes

I know how strange computers can be though...so I tried removing the jumper.
No difference for me.