Help - Memory Feels Slow (Patriot DDR PC3200) *PICS*

[DohDoh]

Hey all,

I purchased Patriot PC3200 XBLK 1GB (512MB x 2) Memory sticks for a dual channel setup. I finally installed it and was noticing a huge LAG in performance.

Memory Test 86+ was used to test any errors and it rans fine there. So I used CPU-Z and Sandra softwrae to benchmark. Here are the pics and please help why this supposedly great memory is lagging on my computer.

(Click on pics to enlarge)

Sandra:

-Why is the "Efficiency" so low? My old Corsair was at 93%

http://img.photobucket.com/albums/v81/DohDoh/Computers/PatriotTestLowEfficiency-1copy.jpg


CPU-Z

http://img.photobucket.com/albums/v81/DohDoh/Computers/PatriotMemoryInfo-CPUZ.jpg



Intel Pentium 4 3Ghz (stock)
MSI 6758 Motherboard


Thanks! :)

[ochungry]

I know mine will ran 2-2-2-5 DDR400 on AMD. yours shows 2.5-4-4-5 and I dont know if it is P4 or mobo. but try to set timing manualy to spec.see if works.

[rseven]

I'm not very familiar with P4 timings but I agree with Ochungry. I would try the spd timings as that should make a world of difference.

[Jakalwarrior]

Try 1t command rate. Makes a big ol difference, then work the others down as far as theyl go.

[ochungry]

Try 1t command rate. Makes a big ol difference, then work the others down as far as theyl go.

where did you see he was running 2T?
Frankly the tRAS @ 5 is too low. for 2.5-4-4 should be ~ 8

[DohDoh]

Here are the results from the new timings:


Sandra:

Only 70% bandwidth efficiency? :shrug:
http://img.photobucket.com/albums/v81/DohDoh/Computers/Patriot1GB2228-Sandra.jpg



CPU Z:

2-2-2-8
http://img.photobucket.com/albums/v81/DohDoh/Computers/CPUZMemory-2228.jpg


Now are these the best results I can get?

[Mdogs444]

@ DDR400, probably.......what is your FSB? cant you overclock them at all and loosen the timings? That memory should be able to do 2.5-3-3-7 @ DDR550+

[Sentential]

That looks about right for a P4 in dual-channel. In order to get into the higher 70% range you will have to turn on PAT.

[DohDoh]

That looks about right for a P4 in dual-channel. In order to get into the higher 70% range you will have to turn on PAT.

PAT? :shrug:

[rseven]

What if PAT doesn't want to be turned on? (Sorry, couldn't resist:))

[rvvae]

What is PAT? Couldn't find that anywhere on my friend's Intel system. He wants to overclock but I need to know all this as I've been following it for some time.

[ochungry]

What is PAT? Couldn't find that anywhere on my friend's Intel system. He wants to overclock but I need to know all this as I've been following it for some time.

On P4 mobo, PAT= Performance Acceleration Technology. A feature in BIOS to increase memory performance.

Edit: Also i think w/ 2-2-2-5 you could increase your FSB to 220-225.
just one notch at the time from 200 and find the limit. from there on it is a different ball game, requiring vcore, vdim, and timing change.
Oh, make sure Pat is turned on - couple of galsses of wine should do it.

[dpgthing]

turn on pat, make sure memory is in 1T mode as this will gain an incredible amount of performance. Make timings 2-2-2-5 and increase your FSB to 215mhz. See what the results are. I should expect about 5500+mb/s with 85% eff. Maybe even better..do it and let's see!
After stable at 215mhz for a couple of hours..move on up 5mhz at a time until about 225~230mhz. this is where you might have some boot probs, try increasing vdimm a little until stable and after 240mhz you might have to loosen timings to 2.5-3-3-7 or so... give it a shot at 215mhz first with 1T and PAT enabled.

[DohDoh]

I don't see 1t or PAT in the BIOS anywhere. :shrug:

[ochungry]

I don't see 1t or PAT in the BIOS anywhere. :shrug:
The 1T command should be under your memory setting. PAT could be there too or under video card section in your BIOS.

[fldrice]

1T is always enabled on intels. Depending on your motherboard, PAT may also be refered to as GAT.

[EvilCloudStrife]

whats a good bandwidth efficiency percent to have? i have mine at 85% and i thought to myself "why not 100%" but i shrugged it off after hours and hours of finding the right timings. let me know, thanks

[gigabit]

i was gonna say T1 isnt a option for intel.

[ochungry]

DohDoh,
that sisSandra 70% mem efficiency is about right as the link below explains it.
also try using 2-2-2-5. I dont know if you have burn-in the ram yet, it will improve your ram's performance.
http://forums.slickdeals.net/archive/index.php/t-15074.html