Difference between Penryn T8100 and Merom T7800

Hi All,

Please kindly let me know what is the difference between T8100 and T7800 .

Apart from the above what are the advantages and disadvantages of Penryn processors ?

My problem is that my XPS 1530 order was confirmed on 24th March,2008 since last 2-3 days the status is "ship from factory" but not in transit .

I had ordered a T7500 processor in my order and at that time Penryn processors were not available for XPS 1530 but now they are available .Should I go for Penryn or let it be T7500 ?

Any quick suggestions would be welcome as I have to talk to Dell tommorrow .

Thanks

 

the only disadvantage i see with the penryn is the initial cost to put one in your laptop. other than that there are alot more advantages. you get more cache and it will also produce less heat and use less energy.

 

I actually asked this question in a thread i made with questions about the M1530, those are pretty much what i guessed, but do you know if there is a variation is performance clock for clock, between Penryn and Merom (SR). The others on Power consumption and Heat production, were quite obvious Advantages of 45nm.

 

Why wouldn't you upgrade T8300 to T7500 since it is currently the same price (on Dell.com) and is a bit faster + uses less power. Upgrade to the T9300 adds $125 which might be a bit much for that little bit faster and more L2 cache

Notebookcheck.net Benchmarks
http://www.notebookcheck.net/Mobile-Processors-Benchmarklist.2436.0.html

AnandTech.com Intel Mobile Penryn Benchmarked: Battery Life Improves Again
http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3195&p=3

 

Well the T7800 has a larger cache and the 2.6 Santa Rosa processor should also run faster than the 2.1 Penryn processor.

The Penryn processor should give you a slight increase in battery life.

It is a tough one because the Penryn is the latest technology but the 2.6 SR processor is a very capable performer.

 

I have already ordered XPS 1530 with T7500 processor .
Now should I change it to T7800,T8100,T8300,T9300 or let it remain as it is ?

Are the advantages more in shifting to Penryn or not ?

Thanks

 

I wonder how T8300 is better than T7500 with a 3MB L2 cache in T8300 ?

Secondly what is the difference between architecture 65nm and 45nm :

http://www.intel.com/products/processor_number/chart/core2duo.htm

 

Santa Rosa isn't a processor; it's the motherboard chipset used in conjunction with Merom-core Core 2 Duos (T7xxx in this case, thoug there are other models as well) and Penryn-core Core 2 Duos (T8xxx and T9xxx). You can have a Santa Rosa chipset in a notebook and have a Merom or a Penryn CPU.

The answers to this original question have been stated multiple times in multiple threads; a simple search would have revealed those answers. That said, the differences are as follows:

-Penryn-cores are made on a 45nm process instead of Merom's 65nm, which means a bit less heat, and a bit more battery life, assuming the same clockspeed.
-Penryn-core processors add support for SSE4, giving a big speed boost to applications that support it (mainly audio/video encoding applications)
-Penryn-core processors have one additional sleep state over Merom-cores, to increase battery life
-Penryn-core processors have slightly more efficient execution units, resulting in a 5-10% increase in performance over a similarly clocked Merom-core processor; performance increase varies by the type of application.

When faced with the choice between a Penryn and a Merom CPU of the same clockspeed, the Penryn is a better choice, provided cost increase isn't too significant. Some vendors have no cost increase; in this case it's a no-brainer. Note also that in most if not all cases, a 3MB L2 Penryn-core beats a 4MB L2 Merom-core, if clockspeed is equal.

 

The advantages are clear, but in most cases they arent very noticeable. Even a very conscious user will not be able to notice the extra 10 min or so in battery life, couple degrees cooler the laptop will run, or couple seconds you will save decoding a video when using a newer processor.

I went from a 1.66 CD cpu on my e1705 to my current T7500 which in benchmarks is significantly faster, but I can't really tell the difference between the two in normal day to day tasks. My advice is to stick with what you have unless you can get a newer cpu without too much of a hassle.