Is the 920xm compatible with the G51j?

I was looking to get the 920xm and put it in my G51j but i dont want to buy a $222 upgrade if it wont run. I dont know why it wouldn't work but i wanted to make sure. Also I am not worried about temps because my cooling system is heavily modded and works well.

http://forum.notebookreview.com/asu...asus-g51j-a1-copper-case-cooling-pad-mod.html

EDIT: Also the chip I would get is an engineering sample so i dont know if thats a bad thing.

$220 for 920xm ES....worth it?

 

It should work, i was going to advise against it because of the cooling, but looks like you got that covered.

 

is an ES fine? Also is it a good upgrade for 222 bucks...or 160 after i sell my 720qm

 

Dug a little, found one mention of it. None of the owners lounges have anyone that said they did the upgrade.

It's a lot of money to drop without knowing for sure, even though it should work.

 

what about it being an ES? Does that matter? Also do you think that is a decent price for the performance? $222 then 160 after i sell my chip

edit: note i will overclock the out of it so does the ES overclock just as good as OEM? Also where can i find a new powersupply...mine is only running with overclocks because i have 30 mini heatsinks on it...if i didn't do that the brick would crash lol

 

ES wont make any difference and as long as you dont raise the power too much it shouldn't be a problem. It is a 55watt processor at stock if it struggles to handle stock leave it as it is and forget overclocking.

 

so an ES is not as good with overclocking as a regular oem? The point of buying this is to overclock as much as possible so I can make this worth while.

also what do you think of this power adapter is 30 bucks good or should i ask around forum if anyone has a spare.

150W AC Adapter Charger Plug for ASUS G51XV-A1 G51XV-A3 G51XV-RX05 Power Supply | eBay

 

Overclocking (as well as actual power usage and heat) depends on what chip you get, 920XM ES are about as good as OEMs as far as I can tell (I've read quite a lot about them).

The inability to undervolt is a downside, but you overclock the 920XM by raising Turbo limits, so even if you manage to get a high OC for a short period of time (before it gets too hot and starts throttling down), a 920XM will still be faster than a 720 or 820...

 

thought you do it by freq and multipliers?

 

Well, it's a bit more complicated with the i7 - you basically set a maximum multiplier, and the CPU goes as high as it can while remaining within the power usage (TDP/TDC) and temperature limits. It's more flexible than Core 2 Quad overclocking, and under normal use, you'll benefit from overclocking, while under full load, the CPU will run overclocked but at lower multipliers or just throttle down to base clock.

I don't have first hand experience with i7, though. See here for more info: http://forum.notebookreview.com/alienware-m15x/599922-those-920xm-throttlestop.html

Also, I recommend you investigate the possibility of a mod like mine (link below) - I'm certain it will help you.

 

mine is good it wont run hot...the case fan doesnt even spin...worse case i'll add more heatsinks and registry hack the fan. will i have to do a pll pin mod for my laptop to overclock?

 

Not with the 920XM - it's unlocked, Throttlestop is enough, UNLESS Asus locked the processors TPL settings - I don't think that's the case, but you should double check that.

I personally think $230 for a 920XM is a great deal (more so if you sell your 720qm) - I paid $210 for my QX9200 a year ago and couldn't be happier with it

What laptop model number do you have?

I did some digging, it seems that the G51J-A1 does support the 920XM (is it the same as your model?):

XOTICPC Forums - View Single Post - ASUS G51J-A1 Benchmarks and Review

Batman: Arkham Asylum on Asus G51J-A1 gaming notebook w/ Core i7 Extreme 920XM - YouTube

Crysis demo on Asus G51J-A1 gaming notebook w/Core i7 Extreme 920XM CPU - YouTube

 

yea i got the 720qm and the gtx260m

 

http://forum.notebookreview.com/asu...-53-jh-jw-overclocking-guide.html#post7843417

Says what the XM can do. As I said the 1st Gen ES is no different to the OEM in any way apart from having ES stamped on it. The XM can be overclocked using Throttlestop by setting the TDP and TLR.

If you currently have the 720QM and it hits 80oC then pass on the 920XM because it runs at 10watts higher and you really want to be able to overclock it because otherwise it is a waste of money. This thing should be able to double the performance of a 720QM.

A long post following my route from understanding it to buying it and then burning it is in the my signature

 

my 720qm hits 64C with a slight overclock with 260m also overclocked. I also only have the case fan at 60% so i'll add a few more heatsinks and do the registry hack for 100% speed 24/7

 

64oC is nothing if the 920XM works you should have no problem at all with temps that low on a 45watt CPU and should be able to get all 4 cores upto around 2.8-3ghz before you start hitting a dangerous threshold. Big boost over 720QM.

 

thats with out turbo?

 

No that is with the turbo.

Simply an XM is just a QM that allows YOU to select at what speed you want the cores to be able to run at.

For instance:

The 720QM with 1 core active means the turbo will run at 2.8ghz but with 4 cores active it will run at 1.6ghz because it will automatically downclock depending on the load. It knows that it requires no more than 45watts to be able to do this so its locked to 45watts.

With the 920XM if you choose for the turbo to run 4 cores at 3.2ghz and give it the power to do so (approx 85watts), It does it.

It will require more power to reach the speed you choose the higher you set it but simply it will do exactly as you say which is the reason why you must understand how they work and read the Throttlestop guide if you haven't used one of these models before. If you say allow it to draw upto 90watt and do not limit the clocks it will bounce off TJMax and throttle like mad under heavy load so you must be cautious and test it first as you would any overclock by starting off low and working your way up and to be on the safe side Throttlestop also has a special alarm facility to prevent that happening.

At stock the 920XM will work just like a QM model running from 3.2ghz when 1 core is active and 2.0ghz when 4 are active.

 

how do i tell if i need to do pll pin mod? Can setFSB tell me? Also how do you chance the PCIe FSB...looking through it and i can't figure it out. Thinking of doing egpu...since i guess you can overclock and do duel pcie cards