E6750 Retail - Some results Air Cooled

[rob[GL]]

hey guys, don't get too excited about temps just yet. CoreTemp is clearly not calculating temps correctly on the G0 rev chips. idling 10C below ambient isn't just impossible, its 10C past impossible. i think it is almost safe to say that 15~20C should be added to CoreTemp readings for actual temps...just an estimate based on the results users have posted in this thread.

Um, sure it is... At stock settings the cpu drops to 6x multiplier (6x333=2000) instead of 8x333 @ 2666MHz, and not only that - the Vcore drops from 1.35vcore to a bout 1.1v

On top of that, I have a laser temperature gun, I'm not using CoreTemp. I'm using Intel's Thermal Analysis Tool to report temperatures. At first I did not believe reporting 15celcius either... But first I touched the heatsink... It was COLD! Then I used the laser temperature gun to test the temperature of the heatsink, it was also below ambient.

If your bedroom is 25celcius, and you pickup say a metal screwdriver, it will be colder than ambient... Where maybe a spindle of cd's or a stack of paper will be the same warm as the rest of the room.

ANYWAYS... I have some early results with my new system, just started out very easy... Went to bios, disable C1E @ Speedstep (EIST) and then changed my VDIMM from stock 1.8v to 2.2v which is what my new Patriot memories claim to need. I left Vcore @ stock 1.35v (reports 1.32-1.33 in windows) and raised to FSB up to 400MHz.

Seems easily stable at this speed, and temperatures are still amazing me after HOURS of orthos, not even breaking a sweat.

[XtremeTiramisu]

Um, sure it is... At stock settings the cpu drops to 6x multiplier (6x333=2000) instead of 8x333 @ 2666MHz, and not only that - the Vcore drops from 1.35vcore to a bout 1.1v

On top of that, I have a laser temperature gun, I'm not using CoreTemp. I'm using Intel's Thermal Analysis Tool to report temperatures. At first I did not believe reporting 15celcius either... But first I touched the heatsink... It was COLD! Then I used the laser temperature gun to test the temperature of the heatsink, it was also below ambient.

If your bedroom is 25celcius, and you pickup say a metal screwdriver, it will be colder than ambient... Where maybe a spindle of cd's or a stack of paper will be the same warm as the rest of the room.

ANYWAYS... I have some early results with my new system, just started out very easy... Went to bios, disable C1E @ Speedstep (EIST) and then changed my VDIMM from stock 1.8v to 2.2v which is what my new Patriot memories claim to need. I left Vcore @ stock 1.35v (reports 1.32-1.33 in windows) and raised to FSB up to 400MHz.

Seems easily stable at this speed, and temperatures are still amazing me after HOURS of orthos, not even breaking a sweat.

Looks good so far, and I presume that you're using the Zalman 9500LED as stated in your sig right?

I'd love to see what's the max OC under 1.5v and what will the temp be like.
Hopefully you'll not be capped by your Zalman 9500LED at higher OC.

Looking forward to see more results

[DerekT]

I was asking for rezults on 965p chipset not p35 .

My mistake. On Intel chipsets, you can only run a divider upwards. In other words, you are only allowed to run your RAM faster than the CPU. All the dividers on P965/P35 (4:5, 2:3, 3:4, 1:2, 5:6, 5:8, etc) are dividers that run the memory faster than at 1:1 FSB : DRAM. The nVidia chipsets can clock memory independently to the FSB.

[alex17 GTX]

My mistake. On Intel chipsets, you can only run a divider upwards. In other words, you are only allowed to run your RAM faster than the CPU. All the dividers on P965/P35 (4:5, 2:3, 3:4, 1:2, 5:6, 5:8, etc) are dividers that run the memory faster than at 1:1 FSB : DRAM. The nVidia chipsets can clock memory independently to the FSB.

I knew that. The problem is that somenone tested a DFI Dark + e6750 and all the dividers but 1:1 don't work. Even if you select other divider the ratio still remains 1:1. That's a big problem for me because i'm going to have 2GB Mushkin D9 that can reach 1200+ 5-5-5-x, and if i can't use other divider than 1:1 i'll actually be limited at 500+ mhz for memory.

Please someone else test this.

[sam95ta]

Can some one help me with my 6750.I can easly do 3.75 orthos stable,low volts 1.46 and good temps 49 load.Anything above 3.75 no mater how many volts I give it windows will not load.Is it my p5b deluxe or this cpu.Thinking I may need a p35 board to go higher.

[jhl81]

Can some one help me with my 6750.I can easly do 3.75 orthos stable,low volts 1.46 and good temps 49 load.Anything above 3.75 no mater how many volts I give it windows will not load.Is it my p5b deluxe or this cpu.Thinking I may need a p35 board to go higher.

I heard that you could go a little higher with p35 chipsets but how high do you want to go?? for the extra 100 or 200mhz idon't think its worth it imo. i have the 965P chipset and i'm running 3.9 and i've seen alot of ppl stuck at around 3.6 even with the p35 chipset boards so i think its more your processor not your motherboard thats the hold back.

[IMG][/IMG]

[m_enanos]

A friend have buy one of theese processors. Testing it here is the result:



G0 Owns -

[Rab]

I heard that you could go a little higher with p35 chipsets but how high do you want to go?? for the extra 100 or 200mhz idon't think its worth it imo. i have the 965P chipset and i'm running 3.9 and i've seen alot of ppl stuck at around 3.6 even with the p35 chipset boards so i think its more your processor not your motherboard thats the hold back.

[IMG][/IMG]

nice overclock, mines wont go over 3.8 without crazy volts & temps, settle for 3.7

[Locust]

I heard that you could go a little higher with p35 chipsets but how high do you want to go?? for the extra 100 or 200mhz idon't think its worth it imo. i have the 965P chipset and i'm running 3.9 and i've seen alot of ppl stuck at around 3.6 even with the p35 chipset boards so i think its more your processor not your motherboard thats the hold back.

Nice chip m8! good job!

[3oh6]

If your bedroom is 25celcius, and you pickup say a metal screwdriver, it will be colder than ambient... Where maybe a spindle of cd's or a stack of paper will be the same warm as the rest of the room.

no, the screwdriver is not colder than anything else in the room...nothing can be colder than ambient temperature unless said object is in direct contact with a colder object. this is not my opinion, this is Physics. heat only flows from hotter objects to colder objects...do some research on this, heat cannot be removed from a colder object to a hotter one, the laws of physics on this planet do not allow it. heat only flows one way.

the screwdriver (or anything else metal for that matter) only feels 'colder' than paper or CDs because metal transfers heat better than paper or CDs and therefore draws heat from your skin faster than paper or CDs.

remember heat only flows from hotter objects to colder objects. us, being human and all, maintain a body temp of about 98F where room temperature tends to be closer to 70~75F thus making us warmer than ambient and all objects in the room. because we are warmer than ambient, heat flows from us to everything we touch in the room. this is why metal items feel colder when we touch them. when you touch an item, you lose heat to that object and there is less heat in your fingertip at contact making it feel 'colder' because we lose that heat to the object. metal transfers heat quite rapidly as opposed to paper which doesn't. therefore the metal object 'feels' colder only because it is removing heat from our fingertips faster.

yes, a screwdriver that was just brought into a room from another room (or fridge or the like) where the ambient air is colder will have a lower temperature initially but after a short period of time (depending of course on the temperature difference of the two rooms) the screwdriver will gain heat from the ambient air and become the same temperature. the screwdriver cannot hold the lower temperature from the other room without help. the screwdriver gains heat from the ambient temperature until they become equal and then doesn't get any hotter because it is the same temperature as ambient and heat only flows from hotter objects to colder objects.

this is why everything in the room is the same temperature as ambient...eventually.

if you put an ice cube in a room, it will gain heat from the ambient temperature causing it to melt into water. that water continues to gain heat from the ambient temperature until it becomes the same temperature as the ambient air. from that point on, the water will never lose heat nor gain heat and drop below ambient temperature or raise above ambient temperature because heat only flows from hotter objects to colder objects. you can't set an ice cube on a table in a room with an ambient temperature of 70F and not have the ice cube melt, can you?

just like the screwdriver can't be colder than ambient and neither can your processor, unless it is in direct contact with an object of a colder temperature that will remove heat from your processor. your heatsink can never be colder than ambient because the only thing it is in contact with is the ambient air and therefore cannot become a lower temperature than the ambient air because heat only flows from hotter objects to colder objects. does this make sense?

if your ambient temperature is 25C...the 'coldest' your processor can get is 25C regardless of what a thermal temp gun or TAT or CoreTemp say. Physics says 25C...period. with the heat a processor is generating even at idle at 1.00v with the frequency lower from a dropped multi, it takes a lot of heat removal ability to maintain it at ambient...just ask the water cooling guys in here.

as far as i know, there is no air cooler on the market that has the ability to remove and dissipate heat fast enough to keep a running C2D at ambient temps regardless of voltage or frequency. because of the relatively weak abilities of air coolers to remove heat when compared to a high-end water setup, chances are you are at least idling a few degrees above ambient temp if not 5C~10C regardless of what your processor and voltage drop down to.

i didn't mean for this post to be so bloody long or sound condescending in anyway, but it was clear that some readers in this thread didn't understand how temperature and heat transfer worked. i only posted this to help educate those readers better on this subject...please don't throw a fit and argue this further...just read and learn from it. ask questions if you have to and myself or others will be happy to answer but i think my explanation and examples should be more than enough.

[scwam]

no, the screwdriver is not colder than anything else in the room...nothing can be colder than ambient temperature unless said object is in direct contact with a colder object. this is not my opinion, this is Physics. heat only flows from hotter objects to colder objects...do some research on this, heat cannot be removed from a colder object to a hotter one, the laws of physics on this planet do not allow it. heat only flows one way.

the screwdriver (or anything else metal for that matter) only feels 'colder' than paper or CDs because metal transfers heat better than paper or CDs and therefore draws heat from your skin faster than paper or CDs.

remember heat only flows from hotter objects to colder objects. us, being human and all, maintain a body temp of about 98F where room temperature tends to be closer to 70~75F thus making us warmer than ambient and all objects in the room. because we are warmer than ambient, heat flows from us to everything we touch in the room. this is why metal items feel colder when we touch them. when you touch an item, you lose heat to that object and there is less heat in your fingertip at contact making it feel 'colder' because we lose that heat to the object. metal transfers heat quite rapidly as opposed to paper which doesn't. therefore the metal object 'feels' colder only because it is removing heat from our fingertips faster.

yes, a screwdriver that was just brought into a room from another room (or fridge or the like) where the ambient air is colder will have a lower temperature initially but after a short period of time (depending of course on the temperature difference of the two rooms) the screwdriver will gain heat from the ambient air and become the same temperature. the screwdriver cannot hold the lower temperature from the other room without help. the screwdriver gains heat from the ambient temperature until they become equal and then doesn't get any hotter because it is the same temperature as ambient and heat only flows from hotter objects to colder objects.

this is why everything in the room is the same temperature as ambient...eventually.

if you put an ice cube in a room, it will gain heat from the ambient temperature causing it to melt into water. that water continues to gain heat from the ambient temperature until it becomes the same temperature as the ambient air. from that point on, the water will never lose heat nor gain heat and drop below ambient temperature or raise above ambient temperature because heat only flows from hotter objects to colder objects. you can't set an ice cube on a table in a room with an ambient temperature of 70F and not have the ice cube melt, can you?

just like the screwdriver can't be colder than ambient and neither can your processor, unless it is in direct contact with an object of a colder temperature that will remove heat from your processor. your heatsink can never be colder than ambient because the only thing it is in contact with is the ambient air and therefore cannot become a lower temperature than the ambient air because heat only flows from hotter objects to colder objects. does this make sense?

if your ambient temperature is 25C...the 'coldest' your processor can get is 25C regardless of what a thermal temp gun or TAT or CoreTemp say. Physics says 25C...period. with the heat a processor is generating even at idle at 1.00v with the frequency lower from a dropped multi, it takes a lot of heat removal ability to maintain it at ambient...just ask the water cooling guys in here.

as far as i know, there is no air cooler on the market that has the ability to remove and dissipate heat fast enough to keep a running C2D at ambient temps regardless of voltage or frequency. because of the relatively weak abilities of air coolers to remove heat when compared to a high-end water setup, chances are you are at least idling a few degrees above ambient temp if not 5C~10C regardless of what your processor and voltage drop down to.

i didn't mean for this post to be so bloody long or sound condescending in anyway, but it was clear that some readers in this thread didn't understand how temperature and heat transfer worked. i only posted this to help educate those readers better on this subject...please don't throw a fit and argue this further...just read and learn from it. ask questions if you have to and myself or others will be happy to answer but i think my explanation and examples should be more than enough.

I want to know why a probe thermometer at ambient 28c dipped into methanol at ambient 28c, when removed immdediate drops down 10c. Could you answer this for me? Makes no sense because there is nothing in the room that is colder than 28c. BTW, the thermistor is extremely accurate (0.2c at most) and is encased in a stanless steel probe

[Gautam]

I want to know why a probe thermometer at ambient 28c dipped into methanol at ambient 28c, when removed immdediate drops down 10c. Could you answer this for me? Makes no sense because there is nothing in the room that is colder than 28c. BTW, the thermistor is extremely accurate (0.2c at most) and is encased in a stanless steel probe

Because the methanol is evaporating off of the probe tip. Evaporation is an active form of heat removal (as opposed to passive, e.g. air cooling or water) and can give you below ambient temperatures. That's why you feel cold when you step out of the shower.

[PJD]

Um, sure it is... At stock settings the cpu drops to 6x multiplier (6x333=2000) instead of 8x333 @ 2666MHz, and not only that - the Vcore drops from 1.35vcore to a bout 1.1v

On top of that, I have a laser temperature gun, I'm not using CoreTemp. I'm using Intel's Thermal Analysis Tool to report temperatures. At first I did not believe reporting 15celcius either... But first I touched the heatsink... It was COLD! Then I used the laser temperature gun to test the temperature of the heatsink, it was also below ambient.

If your bedroom is 25celcius, and you pickup say a metal screwdriver, it will be colder than ambient... Where maybe a spindle of cd's or a stack of paper will be the same warm as the rest of the room.

ANYWAYS... I have some early results with my new system, just started out very easy... Went to bios, disable C1E @ Speedstep (EIST) and then changed my VDIMM from stock 1.8v to 2.2v which is what my new Patriot memories claim to need. I left Vcore @ stock 1.35v (reports 1.32-1.33 in windows) and raised to FSB up to 400MHz.

Seems easily stable at this speed, and temperatures are still amazing me after HOURS of orthos, not even breaking a sweat.

::cough:: I want what you are smoking!! Take your analogy. A screwdriver isn't connected to a power source capable of producing temps of 700F. No way a cpu can be colder than the ambient temps without phase cooling/TEC. I've done watercooling for 10 years and even water running through the circuit without the computer turned on is +4C higher than ambient. My water block is cold also, but I still see temps +8C over ambient.

Also, if by chance Intel has been salvaging that UFO at Area 51 and you are really having temps < ambient, you'd also have issues with condensation. Condensation = mobo death, fried components, bonfire in the closet, etc.

[PJD]

::cough:: I want what you are smoking!! Take your analogy. A screwdriver isn't connected to a power source capable of producing temps of 700F. No way a cpu can be colder than the ambient temps without phase cooling/TEC. I've done watercooling for 10 years and even water running through the circuit without the computer turned on is +4C higher than ambient. My water block is cold also, but I still see temps +8C over ambient.

Also, if by chance Intel has been salvaging that UFO at Area 51 and you are really having temps < ambient, you'd also have issues with condensation. Condensation = mobo death, fried components, bonfire in the closet, etc.

Sorry for posting something old too!! I didn't want to wait for all of those images to render

Anyway, it appears those cpus are cooler which means for some watercooling may not be needed.