explain LDT voltage to me?

**Filter** · 05-22-2005, 11:13 AM

ok i incresed my LDT voltage and my chip performs faster almost 3k in 3dmark01. and my FPS in games have gone up. just by upping the ldt voltage.

i'm at 312x9 on my venice 3000+

**matt1** · 05-22-2005, 11:36 AM

Really, nice..

How much did you increase the voltage? And how much faster is it in benchmarks and FPS demos/gameplay? Might try this when I return home.

**Filter** · 05-22-2005, 11:40 AM

i maxed it out on my DFI board 1.5v

**i found nemo** · 05-22-2005, 11:59 AM

all it does is increase the chipset voltage....nothing else, maybe you had different settings and din't know it

**[timko]** · 05-22-2005, 12:20 PM

Filter,

I think LDT Voltage is covered in this rather excellent OCing guide...

http://i4memory.com/showthread.php?t=327

...also covers a large number of other settings related to OCing so get reading

**Filter** · 05-22-2005, 02:00 PM

nope only ldt voltage. once i raise it my scores go up.

**Magnj** · 05-22-2005, 02:05 PM

probbaly makes something more stable...

**i found nemo** · 05-22-2005, 03:38 PM

did you do it right after the computer booted back up??

**Ugly_Jim** · 05-22-2005, 03:52 PM

I noticed the same thing. 2900 to 3200 in 3dmark05 if you can believe that.

edit: did some testing with a different CPU(venice 3200+). same results. LDT at 1.2 = 2913 in 3dmark05. LDT at 1.5 = 3250. Unbelievable.

**Filter** · 05-22-2005, 04:10 PM

no i was turning voltages down to reduce heat. to find out what voltages my system was stable at. well i notice for a while my 01 scores were down and my framerate was down in certain games. this bugged me for a while. well i went back in and turne voltage back up on ldt and bam my scores are back

**burningrave101** · 05-22-2005, 04:50 PM

I'm sure increasing the voltage to the chipset just made it more stable allowing for better performance. It works the same way when your overclocking your video card and the performance starts to drop when you've overclocked too far.

**Ugly_Jim** · 05-22-2005, 04:54 PM

What on the chipset is being stressed, though? I'm at 840 HTT. Also, I didn't know that LDT was chipset voltage. So there are two voltages for one chip?

edit: I did two more runs at 1.5v and I was unable to duplicate the 3250 score or anything close to it. I'm using the EXACT same settings. Very odd.

**i found nemo** · 05-22-2005, 06:04 PM

it's variable, always defrag hard drive, fine tune ur ram timings trust me i had the same probs

**cantankerous** · 05-23-2005, 03:12 AM

so this whole turning up the ldt volts for higher scores issue is not concrete and guaranteed?

**Magnj** · 05-23-2005, 03:30 AM

no, but it won't hurt anything to try it...

**Filter** · 05-23-2005, 05:34 AM

Originally Posted by cantankerous

so this whole turning up the ldt volts for higher scores issue is not concrete and guaranteed?

im not saying it will increase your score. i was wondering what it was because when i turned it down my scores went down when i turn it up my scores went up.

**i found nemo** · 05-23-2005, 05:38 AM

nice o/c in ur sig there filter

**Filter** · 05-23-2005, 05:48 AM

yeah i'm at 312x9. and when my ldt voltage is set an min my scores go down when its set at max in bios my scores improve. what is the NB voltage

**ozzimark** · 05-23-2005, 06:33 AM

Originally Posted by Filter

what is the NB voltage

the voltage that goes to the nf4 chip

**Filter** · 05-23-2005, 07:07 AM

so in a nutshell a64 has 2 voltage set on cip vcore and ldt?

**J-Mag** · 05-23-2005, 07:34 AM

Originally Posted by Filter

so in a nutshell a64 has 2 voltage set on cip vcore and ldt?

Yeah but your Vcore is made up of VID and an Percent Increase over VID... So then there are 3 voltage "types".

**ozzimark** · 05-23-2005, 07:42 AM

well to break things down all the way, there's like 7 voltages.

1. the actual VID, which is the base core voltage

2. a % over VID, which is useful for pumping your core with voltage. not all boards list it as a % over VID, like the msi k8n neo's, but it still is.

3. Startup voltage. simple enough, the VID your computer boots with. handy for some debugging. i don't know of any boards that have this other than the dfi nf4

4. Vdimm. no need to explain

5. VTT. the voltage that the ram signals run at, usually 1/2 Vdimm

6. VDD. chipset voltage, usually for the northbridge, or in the nforce3/4's case, just the main chip

7. LDT voltage. the voltage of the HT link signal

8. AGP voltage. another thing that shouldn't need explaination

there are of course others, such as the memory controller voltage (which i think is either VTT or Vcore, not sure) but very very very very few boards allow the adjustment of these

(note: i'm not 100% sure about some of these. feel free to correct me if i'm wrong)

**Jasonhk** · 05-23-2005, 07:43 AM

Some one reallly needs to test this properly first..for now im subscribed

**Filter** · 05-23-2005, 08:19 AM

just tested it again does same thing. can anyone else confirm this? or am i just seeing wierd crap. thinking about doing a reinstall and testing again.

**ozzimark** · 05-23-2005, 08:29 AM

i'm thinking it's just not "stable" without raising the voltage some, thus the added "stability" helps out performance

Thread: explain LDT voltage to me?

Thread Tools

Search Thread

Rate This Thread

Display

explain LDT voltage to me?

Bookmarks

Bookmarks

Posting Permissions