Is the P8400 worth £100 more than the T5750

2 identical system Samsung Q210, only different processors

one with a P8400 = £799

other with T5750 = £699

Is this a rip off, and dont compare US prices to UK, I already know

thanks

John.

 

13% increase in clocks 1mb more cache.... 10W less TDP... speed / heat/ battery life difference will probably be negligible... but what the heck if u need that- go for it. I'd rather buy the cheaper one, and get a new cpu of off ebay or something...

BTW:
Q210 with T570:
http://uk.insight.com/apps/productp...m_mmc=Froogle-_-YA-_-SA-_-SAYAQ210FS&src=FRO1
for £563.99

with P 8400:
http://www.laptopsdirect.co.uk/Samsung_Q210-AS02UK_NP-Q210-AS02UK/version.asp?refsource=ldfroogle
for £649.97

- cheapest i could find in the UK

 

The P8400, being Penryn, might also have lower idle power consumption if you value some extra battery time. Or you might strike lucky and get a T5750 which undervolts nicely. I wouldn't pay that extra money for the slightly higher clock and FSB speed.

John

 

+rep thankyou.

 

100 Quid for a P8400 upgrade is fair.
You won't see a great boost in CPU-intensive tasks. CPU cache really doen't matter, as all applications cannot make use of it. 226MHz inc per core is also not much.

But the performance boost due to the higher FSB will be good.
667MHz vs 1066MHz. More bandwidth with the P8400, data will be carried between the CPU and the RAM/GPU much more quickly. You can also make use of DDR2-800 or DDR3-1066 depending upon the MoBo. And 45nm vs 65nm !!

Plus even if you think of upgrading from the T5750 later, there is no way you can get a P8400 for £100. Its hard to get the T8300 for less than £100 on ebay.

 

So how much do these processors sell for new?

 

I think it is £140 from LambdaTek (Retail/Boxed).

I would seriously go for the P8400, as upgrading the slower CPU might void your warranty, if you upgrade it before the warranty ends. And selling the T5750 after the upgrade won't be wise, in case you would need to send your notebook back for service to the reseller/manufacturer.

 

In lots of 1,000, the P8400 is $209. See Intel's price list. However, the T5750 isn't on the list. Does Intel give them away?

John

 

T5750 is not available as Retail, thats why it is not on the list.

I guess the price for the P8400 here is $209 + VAT (?)

But I just checked....

P8400 (Retail)
http://www.pcnextday.co.uk/products/ProductDetail.asp?ProductCode=1122-3482&GroupCode=

T5750 (OEM)
http://www.pcnextday.co.uk/products/ProductDetail.asp?ProductCode=1122-3230

 

I suppose their will be a slight difference between 3gb of 800mhz compared to 667mhz to take into consideration?

 

nothing noticable

 

Checkout the DDR2/DDR3 RAM Guide. John and PP have posted some useful benchies, but I don't think there is a Montevina (1066MHz FSB) vs DDR2-667.

There should be an improvement taking into account the theoretical bandwidths.

 

I believe CPU cache does matter though, at least for the C2D processor generation.

http://www.tomshardware.com/reviews/cache-size-matter,1709-8.html

But I agree with you about going with the P8400 for £100.

 

Well in a gaming context, we're talking something like a 2% increase in fps... nothing to get excited about.

 

Yes, Stewie, but there is virtually no increase in Audio-Video-Synthetic Benchmarks, and 3D Studio Max 8.0, the increase is seen in a few games, and mostly in winrar - where the data is thrown towards the cache not very randomly.

I am not excited.

 

Hi.

according to the manual the Q210 might have a turbo memory slot on the bottom, but it says it depends on the version of the motherboard?

does anybody know?

 

most laptop's have free mini pci e slots, so i'd say any q210 would be ok - just make sure you've got the latest bios update.
btw i don't really recommend turbo memory, you really won't notice any improvement... and there are too many problems atm... wait for tm2

 

you seriously thinking of downsizing to a 12 incher? have you gone off the toshiba range then

 

See also part 2 of my Dell E6400 review. I ran some benchmarks with both 667MHz and 800MHz RAM. Not a lot of difference in performance with the new Intel chipset giving more memory bandwidth than the old one.

John

 

Can I have one

Those laptop CPUs are bloody expensive:
http://www.scan.co.uk/Index.aspx?NT=1-0-91-116%2c522%2c36%2c214%2c318%2c483%2c521%2c399%2c260%2c447%2c127%2c115%2c482%2c404-0

From the link above the T8300 is more expensive than the C2D Q8200

Why intel is selling laptop processor more expensive then their desktop counterparts? I meand they run slower, they have less cache, so they should cheaper to produce?

 

I do believe it to be a good option to go for the P8400, as long as you have the money for it; more power, less heat(possible oc), also less heat the cpu means the gpu should stay slightly cooler too, not much. I managed to get mine undervolted to 0.925V and it wont allow me to go lower.

The layouts quite funky because the ram is accessed under the keyboard.
I dont think it does have turbo memory but from what people have said it seems like a waste of time.

 

The notebook CPUs have to be selected to have the lowest power leakage. The ULV CPUs are meant to be the best of the crop in this respect and are even more expensive.

John

 

I am also planing to buy a Q210 but it's not the onley difrent betwen the 2 difrent models of Q210.

Q210-FSS0UK cost about 570£ (lowest price from a shop thats shipps to sweden)
Have T5750 and onley Atheros® Wifi 802.11b.g

Q210-AS02UK cost about 650£ (lowest price from a shop thats shipps to sweden)
Have P8400 and Intel® Wifi (5100) 802.11a.b.g/n

So i am going for the 1 with P8400.
Upgrading the lower spec Q210 to both Intel P8400 and a Intel 5100 Wlan card will cost be about 197$ for CPU (from ebay incl shipping) + about 80$ for the wlan card (also from ebay incl shipping).

Thats about 280$ = about 145£

So for me it's a easy chose

 

I thought that only AMD use to hand pick the CPU that goes in thier laptops when their desktop and laptop sockets where the same (I think it was socket 754).

Why does intel have to (hand) pick the CPUs that go in their laptops if their desktop and laptop sockets are completely different?

What happens to the mobile CPUs that fail the selection? Do they have their cores disabled or something similar and sold as Pentium Duo Core, or Celeron M? Or are they just binned?

 

The testing gets done long before the chips are packaged. I'm sure it is done by machine but I don't know how. It may well happen before a wafer chips gets sliced up.

This is where Intel creates new CPU models with lower speed, less cache, single core, etc., and often attractive pricing. A chip needs to be seriously bad to be binned.

John

 

Well, power leakage is current flowing in a circuitry that is not being used at the moment and caches comprise much of a CPU chip's area and transistor counts, they are reasonable targets for attacking leakage. It has something to do with the nature of cache line usage, and stuff like that, and can be fixed (temporary solutions).

I don't think that Intel necessarily hand-pick the CPUs, if you consider the no. of CPUs being produced and marketed every month or so.

So bad C2D Penryns end up being released as good Penryn Celeron Ms ?!

 

Thanks Andy and John Ratsey

I was not sure how they do the selection, this way I put hand between brackets.

We all agree that the selection consists on branding the mobile cpus as Penryn-6M Penryn-3M, or Celeron M, and we also agree that this allows intel to calculat the best (max) multiplier for a given CPU.
Right?

If the manufacturing process is the same for either desktop and laptops CPUs, and the selection process is made by robots and not by hand, so why Mobile chips are so expensive than desktop contreparts?

I mean I'm sure (unless I'm wrong, and in which case plz correct me) that intel could down clock there desktop cpus to generate less heat and fit inside a laptop. So I think that the only reason for them to have two different sockets is to increase their profit margine.

 

AMD provides some competition at the desktop level but can't match Intel's low power consumption for notebook CPUs. So Intel has less competition and therefore greater freedom to make a big profit. Just be thankful that AMD exists. Otherwise all the computers would cost an extra $500. (I have, for many years, had an AMD-powered desktop partly to help keep the competition alive).

John

 

I'm thankful that AMD exist + I've always been fun of their products. I've back home (parents home) an AMD desktop since 2002. I also had a compaq AMD based laptop for 3 years until the mobo developed a fault last year (cold joints in the keyboard socket).

 

Yes, it's a ripoff be careful!