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Dell Latitude D630 is a thin and lightweight version of the Latitude line. With a 14.1 LCD screen and a 9 cell battery, this laptop is meant to be more mobile.

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Best processor possible for the Dell Latitude D630?

Hello! I have a Latitude D630 that I've spent a lot of time upgrading and servicing as a side project. I was wondering the upgrade path from where I am. I have a Core 2 Duo and would like to go further down the CPU route. It is a Socket P (478) Motherboard.

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May i use t6600 in d630. Plz help

@Rahul Maths Point I don't know for certain, but judging from spec sheets and such, I don't see any reasons why you can't.

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Intel SLAZ3 Core 2 Extreme Processor CPU X9000 (6M Cache, 2.80 GHz, 800 MHz FSB)

Look on eBay. Currently going for ~$45

*I have one in my d630 and it works great!

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Sounds good. I might grab one.

Just curious, what is battery life and temps like? I get decent temps and battery life with my Core 2 Duo T7300 but was wondering what the Core Extreme was like since it has a 9W higher TDP.

I actually grabbed a X9100 @ 3.06GHz, for cheaper than the X9000


When I upgraded my d630 processor a few years ago I read a lot of controversial discussions about the X9000’s higher wattage, and therefore possible higher temps. I do remember at least one person that said he had tried one without any problems, but he listed no info to back it up..

So, before I installed my X9000, I recorded before power consumption and temperatures (under various conditions(for my T9300), including max CPU usage for extended periods of time), then I installed my X9000 and collected the same data. The results(watts/heat) were almost exactly the same (T9300 vs X9000), and the X9000 made significant difference in performance.

I have had the X9000 running in my d630 for a few years now, and this laptop is still used daily for email, web browsing, and YouTube. Relatively speaking, it works fantastic, for 2007 technology based laptop.

What also really makes these d630’s hum is adding a SSD drive, and 4 to 8GB of Ram.

-miker71 (responce part 1 of 2)

(response part 2 of 2)


BTW: As far as I know, the X9100 will not POST(not work) in the d630. I remember reading that others had tried this with no luck. The X9100 is a 1066MHZ CPU, whereas the X9000 is an 800MHZ CPU. The d630 can only handle 800MHZ CPU, and therefore the X9000 is the fastest CPU it can use.

Also: You will need to flash you BIOS to at least version A17 (A19 is the highest)

Here is a quick rap sheet(specs) of my maxed out d630:

Intel Core 2 Duo Extreme X9000 CPU/2.8ghz/6MB, 8GB Ram, SAMSUNG 850 PRO 2.5" 256GB SATA III 3-D Vertical SSD, Intel Wireless-AC 7260.HMWG.R (Revised) 887Mbps w/intel Driver Ver 17.0, Nvidia Quadro 135M/128MB Dedicated, WXGA 1440x900, Flush Mount PCMCIA SDHC Card Reader, 12 cell Battery, Win7 64bit, BIOS A19, WEI=4.1


-miker71 (response part 2 of 2)

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And, having just received an X9000 for my Dell D830 yesterday (and running fine so far), I wonder how one could use the unlocked CPU frequency multiplier (FID), esp. when using the notebook only under Linux…

Definitively, there’s no option foreseen in the Dell A17 bios to set the multiplier (well, it’s not a gaming notebook ;-)).

Did anyone try this?

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I don't think that's reasonably possible. You could maybe update your BIOS to A19, but I doubt that would change anything.

Fascinating: BIOS A19? For the D830? Where did you get that one?

However, in the meantime I found out how to tweak the mulitplier...

* MSR (model specific registers) is the answer

* under Linux use the msr-tools package

* this is used by the script from https://forums.gentoo.org/viewtopic-t-91...

* for the X9000 the values are actually:

** 0x1128 or 0x1129 for a multiplier 17 (3400 MHz)

** 0x1028 for 16 (3200 MHz)

** 0x0f27 for 15 (3000 MHz)

** 0x0e26 for 14 (2800 MHz - native to the X9000)

Running continuously both cores at 3400 MHz does not work (overheating), but running at 3000 MHz works nicely.

When running at 2800 MHz there seems to be no problem with temperature or power consumption.

Please note, the Extreme processors don't have support for IDA (Intel Dynamic Acceleration or TurboBoost) thus, the speed is the speed, no boosting of singular core.

Some months later, I had more experiences with the X9000 at different speeds. First of all, purchasing a good (12W/mK) thermal paste solved the 3.4GHz longterm instability issue: the processor runs now ~ 15° cooler (at max 85°) than with the original 1.5W/mK paste (99° with throttling). Second, I still cannot see why sometimes corefreq-cli shows a bus speed of 200MHz (should be), sometimes up to 240MHz. It seems that there's some interpretation done to "explain" the 3.4GHz core speed.

Furthermore, the above mentioned script is sometimes not effective when the processor throttles... Then a script restart (setting the processor speed again) is needed. Thus, I run it in a 90s restart loop. This has the advantage that a hot processor gets a moment of rest. I will still try for a new thermal pad for the northbridge which should make it possible to really run cool. BTW, the script seems to react allergic to VID values above 29 (e.g. 0x1129)... Seems to be beyond the voltage regulators configurability.

And another point: don't forget to clean the fan and esp. the heat dissipator behind the fan from time to time. Miracles can happen ;-)

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This was the best site for loading Windows 10 21H1 64 bit version. Search this article.

How to Install Windows 10 on the Dell Latitude D630 – The Technologist.

The A19 Bios upgrade at the Technologist site loaded on my Dell D630 perfectly. The A19 upgrade on the Dell site did not work.

Follow the instructions all the way through at the Technologist site.

My Windows CD did not work in by D630. So I created a bootable USB flash drive and downloaded latest Windows 10 rev to my flash drive.

I upped the ram to 4gb before I loaded Windows. Original ram was only 1gb.

I put in a new Kingston 480gb SSD drive in the D630 before starting Windows installation. Took it like a champ. The USB bootable disk with Windows loaded up perfectly, and all drivers were installed automatically.

Next upgrade is Wifi card for 300mbs. The original is only 54mbs.

Probably put in a Duo Core 2 processor in the future which would be an Intel Extreme X9000, which others have proven out already.

The main bottleneck though is the 54mbs wifi card. For about $ 8.00 I have the 300mbs coming in.

With original processor of 1.7 mhz it plays videos and all just fine.

This upgrade totaled me about $ 120.00 for a nice laptop. The laptop was given to me from one that bought a new one for about $ 1,400.

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Hello, Technologist site is not working, please can you help with A19 Bios for d630 health file ?

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I think that you cant upgrade your Laptop CPU.

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It can indeed be upgraded. This is an older laptop that is more modular.

Older ones that have a socket, yes. However, on newer laptops it is more difficult

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July 2021, the X9000 is now running about $100 on E-bay. Looking for a P socket (478 pins), 800 MHz CPU, 6M cache, (“2.6/6/800 p socket, dual core”) the T9300 has 2.5/6/800 P socket is about half the price, but I read somewhere that it required a revised bios at startup - no experience here. The T9500 2.6/6/800 is also about $50. The X9000 is still the best CPU for the D630 it appears, but looking. The 800 MHz was basically phased out. I’m no expert - just learning along the way. Older models are also available with a smaller cache.

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I put a T9500 Core 2 Duo, 6MB Cache L2, 2.60 Ghz, 800 MHz FSB, Thermal Design Power 35 Watts in my D630, five days ago. It booted just fine. I have A19 BIOS firmware.

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Is there a different heat sink assembly assembly that should be used when installing X9000? The thermal design for this CPU is 45 Watts. For all the other Core 2 CPUs 800MHz it is 35 Watts.

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Here is a link to article to improve D630 cooling w/copper shims instead of stock pads.

I did this mod and temps became more stable and lowered significantly for my X9000 CPU -


*For Copper shims: Search eBay "D630 heat sink copper shims"


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