t9400 or p9500

is the 10w difference worth the almost 100$ price difference?

 

for a $100 diff, no...

 

where are you buying that cpu from? paying a $100 is too much. at newegg it's just a $40 difference. The main difference between the two is the power consumption of the processors, ie. 25W (P9500) vs 35W(T9400). this difference means a lot in battery life. therefore the p9500 would be more efficient for a nb to extend battery life. hope this helps.

 

Skip the P9500 and get the new P9600. Its very close to the same price. Provantage is the only quality retailer that I could find that had it in stock.

http://www.provantage.com/intel-aw80576sh0676mg~7ITEP30X.htm

 

If by alot you mean around 30mins max?

errr... i have seen some sketchy reviews of provantage, because they do not have confirmed stock, and drop ship from other retailers.

 

im buying oem off ebay, good old extremeprocessors never lets me down, quality cpus and a quality seller. 248 for the p9500 and 158 for the t9400. i only buy retail for my desktop and i toss the hsf anyways . im starting to actually lean towards the t9500

 

The price difference isn't worth, in my opinion. I have a P9500 in my Dell Latitude E6400 and a T9300 in my Dell Studio 15. Both have LED displays, 7200rpm hard drives and WXGA+ LED displays...and the E6400 lasts no more 20 minutes longer on the 6-cell battery. I'd expect the T9300 and T9400 to be very similar in terms of power use. Performance-wise, I can't tell a bit of difference.

 

id get the t9400

 

get the more efficient one from the egg

 

his cpu aren't OEM they're ES but has current stepping so LIKE OEM

 

vinceboiii, you are right about the extremeprocessor CPUs. But they work fine, so don't worry.
Now some words about the battery life. Usual rating of 6 cell battery is 4400mAh. So what does this means - simple mathematics - a 35W CPU can work about 1h 15min (4400mAh / 3500mW) on full load, and 25W CPU will work 1h 45min. I know that the laptop is not only a CPU, but after this is the most powerful part in it, and the part that battery life depends the most, I took only the CPU consumation for the calculation. More accurate value you can get when you know exact power consumption ot you laptop.

 

Perhaps with a select few items. The reason I use them is for their fast shipping and easy returns. Newegg is my first choice but provantage comes next because they stock more eccentric items.
Then again, you don't like newegg so I suppose it follows that you wouldn't like provantage.

 

I bought a t9400 for $160 from eBay. I don't think 10w is really worth $75-100 considering how you can find an outlet almost anywhere nowadays. Now that I think about it, it might have been an engineering sample though :S

EDIT: Supposedly, the ES processor does not report temperatures, but has an unlocked multiplier according to some info I found on the net. Hopefully it will be stable :| Auction was not clear... Oops. I will update once I have everything installed.

 

If that's one of the buy it nows that comes from Texas it should be okay, mine works fine, does a great job rendering in blender.

 

Current generation intel processors do not have an unlocked multiplier.

 

That's what I thought until I saw a couple people on the internet report the multiplier as unlocked and went from 9.5 to 10.5 with rmclock.
One of them is HERE.

I bought this one HERE from China. Seems to be same stepping as one from Texas though. Q4HQ.

One of the other eBay sellers claims the ES Q4HQ stepping that other sellers have are bad and that his ES stepping is better. HERE

 

His Q155 is C0 stepping. the Q4HQ is B1 stepping. C0 stepping is a production stepping

 

qael is what you should be getting. those are the only t9400's i buy. they dont even say es in the description of the chip.

 

is it ok that the voltage here is 1.3 and on the other b1 stepping is 1.1:
http://ebayamtb.tw/T9400/Q155D.PNG

 

Thankyou for the correction. Hopefully the ES will be okay. I should get in by next week. Seems odd voltage is different. I will let you guys know how it works.

 

i decided on a t9600, since i was going to pay over 200 for the p9500 i figured i would just jump straight to the t9600

 

I have an embarrassing question. Does the thermal design number.. i.e. 25W, 35W, or 45W reflect how much heat the processor produces? As well as the power they absorb too.

Plus.. do MS-1651s support 45W processors? I wonder what kind of battery life a 25W processor gets over a 45W. Could a 45W processor be underclocked on battery to equate the battery life between it and a 25W processor?

 

Thermal Design Power (TDP) is an Information that doesn´t matter for the end customer. CPU manufacturers have already stated many times, that this information only matters for manufacturers of cooling solutions and for nobody else. Also stated TDP power of CPU is an average value. So considering that almost 100% of the CPU power is converted to heat, the real power consumpition should be somewhere near to the stated TDP. But it easily will exeed this value, especially on 100% load.

I've read that somewhere that people already tried CPUs with 45W TDP and they didn't have trouble so far...

It depends what you use your laptop for... but in normal use it's between 20-30 min more with 6 cell battery.

For sure not.

 

Okay.. thanks. I still don't quite understand by what you said, concerning a processor with a higher TDP, if it will produce more heat. From what I'm getting if the TDP is said to be 25W, but the processor on a full load will still exceed that?

Kind of going back in the direction of this thread.. so the only advantage of a processor with the TDP of 25W or 35W is the battery life? All along I assumed if a processor absorbs more power it would produce more heat. If that's not the case then I suppose I can't see a very good reason to get a 25W over a 35W.. only unless battery life is very critical, ie. ultra portables.

 

You are right, TDP affects both battery life and heat.

My understanding of TDP is that, most directly it relates to the thermal footprint. TDP is a guide for the amount of heat dissipation a heatsink/fan is required for a particular CPU. All things equal, a TDP of 25w will run cooler on average than a 35w TDP CPU.
On the other hand it can also be used as a guide for power draw. Within the same line of CPUs a lower TDP is indicative of lower power draw. In other words, lower TDP = better battery life. However TDP cannot be used to compare power draw between two different lines of CPUs or brands. For instance, I wouldn't directly compare a Turion's TDP with a Core 2 Duo or even Core 2 Duo with a Core Duo.

 

Hey did you ever get your ES processor? Can you read temps?

 

I have an ES processor, YES you can read temps its like a NORMAL processor.