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Performance mode.

C

CarpetHair

Limp Gawd
Joined
Aug 13, 2003
Messages
172
I see in a lot of the pictures people put up of CPUZ, it's disabled. Mine's enabled. What the hell is it? I don't see anything in my BIOS about any kind of performance mode.

Take a look.
cpuz.bmp
 
bump. i wanna know too.... mine's disabled.... i wanna know if i can enable it somehow... always after more performance ^_^
 
Maybe it means dual channel is enabled. My mobo doesnt support dual channel and the performance mode is greyed out.

Hey i noticed your running pc2700. Im running pc320 and it says my frequency is 166. what why is that?
 
Originally posted by clreinstein
Maybe it means dual channel is enabled. My mobo doesnt support dual channel and the performance mode is greyed out.

Hey i noticed your running pc2700. Im running pc320 and it says my frequency is 166. what why is that?
Click to expand...

that would be because its only running at 166. why did you get stuff thats for 200 if you were only going to run stock?
 
I know on my asus p4c800 that there is a performance mode setting in the bios, i have mine on but I havent tested to see how it makes a differance. I am guessing that you have yours on as well.
 
i'm running a Dell 400SC server right now with 3 different brands of 512mb PC2700 and mine says enabled as well. I highly doubt it means dual channel is on.
 
Performace mode in CPUZ is referring to PAT. On an i875 chipset, you should see that enabled almost all the time. On 875's, PAT is supposed to be automatic. Meaning that if the bios/chipset detects that the ram can be run with lower latencies (within the chipset I believe) then it will run them lower.

On i865 chipsets, manufacturers have figured out a way to "enable" PAT. An 865 is basically an 875 without support for ECC ram and has PAT disabled by default. So, through the use of Bios "tricks" they enable PAT, which shows up as Performance Mode in CPU-Z, and Performance Acceleration Tech. in Sandra.

If you have a P4P800, and you set the FSB to 200 or less, you'll notice that PAT (Performance mode) is enabled. When you set it to 201+ FSB, then you'll notice that PAT (Performance mode) is disabled. This is because the p4p800 only enables PAT on speeds of 200 and below.

On Abit boards, PAT is enabled by "fooling" the chipset into thinking it is booting with a different NB strap. Setting the NB strap to 667, or 533 enables PAT by default. I could be wrong on this, an Abit owner would have to verify (I'll be getting an Abit board in about 3 days) though.

try searching Intel for PAT.
If you check ANY decent review site, you'll find them discussing the matter with most of the 865 (springdale) reviews from Abit, Asus, Epox, Gigabyte, etc...

Hell, check the [H] reviews. I believe they have a p4p800 review that goes into the subject.
 
Originally posted by kronchev
that would be because its only running at 166. why did you get stuff thats for 200 if you were only going to run stock?
Click to expand...

Whys it only running at 166. The ram came with the mobo. Its an intel board so I can change the memory divider or the fsb.
 
hm.. nst is that true? what about setting nb strap to PS800 that would be 200.. i'll try to verify this later on tonight.. except my ram is already running low latencies at 2-3-3-6 (at 245fsb to boot =p)

Flip
 
Originally posted by clreinstein
Whys it only running at 166. The ram came with the mobo. Its an intel board so I can change the memory divider or the fsb.
Click to expand...

according to your sig its only at 333 mhz, 333 / 2 = 166
 
nst6563

If you have a P4P800, and you set the FSB to 200 or less, you'll notice that PAT (Performance mode) is enabled. When you set it to 201+ FSB, then you'll notice that PAT (Performance mode) is disabled. This is because the p4p800 only enables PAT on speeds of 200 and below.
Click to expand...

I have the p4p800 and my fsb is 251 and my performance is enabled, but I think I set it in the bios, I will double check and post a screeny when I get home from work.
 
The only way to enable the "PAT" (Asus calls it "Memory Acceleration Mode") on an P4P800 is to either A, run it at 200fsb or below. B, do the Bios Hack.

read this link about the hack. I've done it, and it does enable PAT at over 200 fsb.http://www.abxzone.com/forums/showthread.php?threadid=51548&perpage=15&pagenumber=1


The Performance mode you're talking about in bios is not PAT, and I believe is located on the Jumperfree page. It is something else, which can be enabled at any fsb. It does however tend to increase overall board performance. The option in Bios to enable PAT is located under Chipset settings and I believe is called MAM (Memory Acceleration Mode), however it will only be enabled at 200fsb or below.

Flip, If you're talking about an Abit boar, then I think if you set NB800 then it's basicly the same as setting the NB strap of CPU, which afaik won't enable PAT. Only 667 and 533 will. But I'll find out in a couple days on that one when I get my Abit board.
 
I just checked my bios and in Jumper Free it has Performance Mode and mine is set to Turbo

In the Chipset section it has Performance Acceleration Mode and mine is set to enabled

here is a screeny of cpu z

cpuz.jpg


Could be the newest bios enabled the use of PAM with a fsb higher than 200. I have no idea really
 
Foolio, you have a P4C800, which is the 875 that has PAT enabled by default. It's a feature of the chipset which doesn't have to be "tricked" into being enabled like on the 865 chipsets.

That's why you have Enabled there. Any 865 chipsets require a bios hack to enable PAT.
 
Originally posted by Heath
And PAT is a good thing right? :confused:
Click to expand...

yes, PAT is a good thing. Give a performance boost to your ram. To the average user, it's probably not noticeable...however to the gamer/enthusiast...it can be.

It's not a huge "miracle" boost either, something along the lines of 3-5% I think...could be wrong though.
 
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