Overclocking 5850, not getting artifacts with memory

[x1222]

My first time overclocking.

I got my asus 5850 direct CU top today. So I was overclocking with MSI after burner and GPU tool and Ati tool. I was only doing stock voltage. I got up to 875 core and start getting artifacts so I stopped. But with my memory I couldn't get any artifacts. I went up to 1320MHz, still nothing. I let it run for like 5 minutes. I did some googling and some people were able to reach 1280MHZ on the same card on stock. That was strange so I thought memory maybe wasn't changing but GPU-Z and Ati tools, and asus doctor said the same clocks. So I kept pumping it up until 1360, no artifacts but then after I close gpu tool my screen crashes. So I guess it was working and in hindsight it was probably bad to crank it up so high on stock.

So why aren't I getting artifacts on my memory overclock? Should I bench longer? Core artifacts showed up within a minute. Since I don't know my max i'm probably going to get with 1230 MHZ for memory?

 

[RavenSEAL]

I wouldn't go any further. I doubt a few clocks on the memory will have a big difference.

 

[happy medium]

My first time overclocking.

I got my asus 5850 direct CU top today. So I was overclocking with MSI after burner and GPU tool and Ati tool. I was only doing stock voltage. I got up to 875 core and start getting artifacts so I stopped. But with my memory I couldn't get any artifacts. I went up to 1320MHz, still nothing. I let it run for like 5 minutes. I did some googling and some people were able to reach 1280MHZ on the same card on stock. I thought memory maybe wasn't changing but GPU-Z and Ati tools, and asus doctor said the same clocks. So I kept pumping it up until 1360, no artifacts but then after I close gpu tool my screen crashes. So I guess it was working and in hindsight it was probably bad to crank it up so high on stock.

So why aren't I getting artifacts on my memory overclock? Should I bench longer? Core artifacts showed up within a minute. Since I don't know my max i'm probably going to get with 1230 MHZ for memory?

memory does not artifact anymore. AMD cards use error correcting memory now.

To test for errors you must bench the card with a game and when you start to lose performance you step back the memory overclock like 15mhz, and that should be your max memory overclock.

I would find your max core first then test the memory. Just a tip.

1300+ on the memory is possible, look at my memory on my card.
It will do 1365 before losing performance. I just keep it at 1300 day to day.

 

[x1222]

Oh haha. That would have been good to know. I did test core first. What generation of cards did this start with? Could I have possibly damage my card then? Time to start some benching then, i guess. Thanks.

 

[happy medium]

Oh haha. That would have been good to know. What generation of cards did this start with? Could I have possibly damage my card then? Time to start some benching then, i guess.

No , I dont think it will, its actually made not to. I had mine at 1400 at one point, but it was loosing performance.
Good luck.

 

[Xarick]

If you own mass effect .. run that.. it will show even the slightest instability in your OC.

 

[Termie]

The memory on most HD5850s won't go past about 1225-1250. It's not directly comparable to Happy's 5750. It would be nearly impossible to hit anything above 1300 without error correction kicking in. The Asus may be able to do 1280 - that would be high but it's a good card.