Maximum memory for P-1 in XP 32-bit

[willmore]

Hello, all. I have a Q6600 w/4G of RAM. I'm running XP 32-bit on it and I was curious how I could get as much memory available for prime95--mostly for when doing P-1 work.

Currently, I'm using the /3GB switch when starting up windows. This seems to allow Prime95 to use a bit more memory than it used to--with /PAE or without any options of that sort.

Has anyone done any tinkering with this? I'm not inclinded to worry with it much at this point as the machine will probably be converted to Windows 7 and receive another 4G of DRAM in a month or two.

But, there's probably a good 4 P-1 tests that will happen before then. We might as well make the best of it. :)

Thanks.

[lycorn]

I recall having read somewhere in the forum that, at least under a 32 bits OS, anything over 1700Mb would be useless in terms of raising the probability of finding a factor. As for the speed of the test I´m not sure.

[lfm]

Originally Posted by willmore

Hello, all. I have a Q6600 w/4G of RAM. I'm running XP 32-bit on it and I was curious how I could get as much memory available for prime95--mostly for when doing P-1 work.

Currently, I'm using the /3GB switch when starting up windows. This seems to allow Prime95 to use a bit more memory than it used to--with /PAE or without any options of that sort.

Has anyone done any tinkering with this? I'm not inclinded to worry with it much at this point as the machine will probably be converted to Windows 7 and receive another 4G of DRAM in a month or two.

But, there's probably a good 4 P-1 tests that will happen before then. We might as well make the best of it. :)

Thanks.

I'd say its not worth the effort since more than 500m / core makes little difference.

I assume you will run MS/Windows 7 in 64 bit mode then? Does w7 give you the option on a 32/64 bit capable CPU?

[henryzz]

Originally Posted by lfm

I'd say its not worth the effort since more than 500m / core makes little difference.

I assume you will run MS/Windows 7 in 64 bit mode then? Does w7 give you the option on a 32/64 bit capable CPU?

as far as i know it gives the option
i think both versions are on the same dvds this time

[James Heinrich]

Originally Posted by henryzz

as far as i know it gives the option
i think both versions are on the same dvds this time

I do not believe it's any different than Vista: 32- and 64-bit versions are different DVDs (although the same product key will work for either version). Hopefully the bias will be towards 64-bit this time.