Which would give me the highest battery life: T3200, T5800 or T8100 ?

Which would give me the highest battery life: T3200, T5800 or T8100 ?

Intel® Pentium Dual Core Processor T3200 (2.0 GHz, 667 MHz FSB, 1 MB L2 cache)
Intel® Core™ 2 Duo Processor T5800 (2.0 GHz, 800 MHz FSB, 2 MB L2 cache)
Intel® Core™ 2 Duo Processor T8100 (2.10 GHz, 800 MHz FSB, 3 MB L2 cache)

I would have thought that the lower specced processor would give me a better battery life, but other sources tell me that there are many other factors ~ energy lost as heat or something >.>

Any info on the topic?

// By battery life I mean how long the battery will last for after a full charge (i.e. 3/4 hours etc) not actual battery life as in charge/use cycles

 

The T8100 likely would get better battery life than the other two, but I doubt that the difference would be noticable.

Greg

 

The pentium dual core will be the most power efficient because a pentium dual core is a stripped down core 2 processor, with half of the cache.
However, the actual power consumption of the T3200 versus the T5800 is pretty small. Plus the T5800 is a much better chip than the T3200 is.
I would go for the T5800

K-TRON

 

Hmm, then it all comes down to whether the processors are "value for money".

T3200 = no extra charge
T5800 = + £50
T8100 = + £120

Considering that the most intensive things I use my current computer for are watching 1080p HD videos, and playing warcraft iii + epsxe.

are the T5800 and/or T8100 value for money, or should I stick with the T3200?

Thanks for your posts

 

That is not the case. It depends upon the CPU architecture.

T5800/T3200 are Meroms (65nm).
Wheres T8100 is a Penryn --> Faster (SSE4.1) and more power efficient (45nm).

£120 is a fine price, considering that a new T8100 would cost you £100+.

Why not look into the newer P-series Penryns, i.e. P8400/P8600 ? These have a lower TDP, and on an average, do provide more battery life, when idle and under load.

A T5800 will be ok, if you have a good GPU for watching HD content, and Warcraft, etc.

 

Thanks for the info

Interesting, but this leads to even more questions ^^
Would a T3200 along with a 3450 256mb Graphics Card be enough to run 1080p HD videos at full speed? how about the T5800?

I have a PC at home with 3Ghz single core processor with a FX 5200 128mb, which runs 720p fine, but lags like hell with 1080p.

 

Even the T3200 will outpace a 3.0Ghz P4 processor.
The 3450 ATi is a good graphics card. It is betweem the 8400GS and 8600GT in performance.
The 3450 coupled with a T5800 will give great performance for video playbaak and video games. I am not so sure what the game requirements are, but a core based cpu is much better than a pentium dual core.
I personally do not think the extra £70 is worth it to get the T8100. The performance difference is going to be negiligable, and that amount more for it cannot really be justified.

K-TRON

 

Not being a miser or anything, but yeah thats what I thought >.>
T8100 for +£70 seemed quite a bad offer to me.

T5800 for +£50 gives +1mb cache and a FSB to match the memory speed, and its also a "true" dual core processor as opposed to T3200, so I think thats quite a decent offer.

T5800 for me then,
Thanks everyone for the replies, much appreciated!

 

I read somewhere that T3200 uses more power than T5800 because it lacks some powersaving functions. Not sure though.

 

Read this, interesting: http://answers.yahoo.com/question/index?qid=20081022152822AA1vg1T

"The T3200 is a stripped-down version of T5750, while T5800 is a re-branded version of T5750.

In other words, other than the FSB and L2 cache, they are basically the same chip"

 

I gotta seconf K-TRON's opinion here. T5800 is the best choice. It definitely will run better than the T3200, while not being as expensive as T8100. Plus, I might add that if watching HDs and playing low-to-medium games like War3 and emulators are the heaviest task you're gonna put on your laptop, then I suggest going for a lower GPU which would be cheaper. While not exactly that powerful, the 3450 is still a high-end GPU, and trust me, 1080p HDs or War3 are not the heaviest things that card can do.....

 

I would have to say the T8100, due to the Core 2 architecture, bigger cache, and higher frequency. The T8100 is able to get its work done faster, so it can scale down to idle and rest, sooner than the other CPUs could do it. The slower CPUs will consume power longer while it processes. I though the change from my 25w P9500 2.5GHz to an overclocked 56w X9100 3.5GHz would kill my battery life, but amazingly, it is almost identical, and when not overclocked, running at 44w, actually extends my battery life by a good 10 minutes due to the fact that it can finish its tasks in almost half the time it took the P9500.