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Which processor (i7 7500 vs i7 7600) should I choose?

X1/X1-Carbon series specific matters only
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smallbox
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Which processor (i7 7500 vs i7 7600) should I choose?

#1 Post by smallbox » Sat Aug 26, 2017 10:23 am

Dear all,

I'm considering to buy a new x1 carbon, but I don't know which processor (i7 7500 vs i7 7600) I should get. Please help me out. Now option for sure I'll go for is the 16g ram. Between those 2 processors, is the performance difference obvious? Is it necessary to pay extra £180 to choose 7600? I just use this laptop for internet browsing, watching movie, sometimes gaming and some excel works.

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Re: Which processor (i7 7500 vs i7 7600) should I choose?

#2 Post by RealBlackStuff » Sat Aug 26, 2017 10:55 am

IMHO you'd be wasting money with the i7-7600u for only a few % improvement over the i7-7500u.
And the 7500u will also run a little cooler than the 7600u.
With your planned usage you might even consider an i5 instead of i7.
The X1C is also more expensive than the T470 or T470p, which you should look into instead.
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Re: Which processor (i7 7500 vs i7 7600) should I choose?

#3 Post by smallbox » Sat Aug 26, 2017 1:05 pm

Thanks, realblackstuff.

There is an option of i5 7300u which has 3.5 Ghz as i7 7500u does. However this i5 has 3mb cache. Do u think this i5 processor is better than the i7 7500u? It costs slightly more than i7 7500u.

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Re: Which processor (i7 7500 vs i7 7600) should I choose?

#4 Post by RealBlackStuff » Sat Aug 26, 2017 3:21 pm

i5 should be cheaper than i7.
http://www.cpu-world.com/Compare/857/In ... 7500U.html

Don't stare yourself blind on a few numbers.
Honestly, for your presumed use even an i3 would suffice!

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Re: Which processor (i7 7500 vs i7 7600) should I choose?

#5 Post by w0qj » Mon Aug 28, 2017 12:18 pm

1. If you plan to do only one thing at a time (nothing done together at the same time), then any i3/i5 CPU with 8 GB RAM would suffice for the time being.
(ie: Either T470 or X1 Carbon).
~Browser internet with a few tabs open
~Watch movie
~Occasional gaming
~MS Excel work

2. The real issue is future updatability:

2a) X1C5 (X1 Carbon Generation 5): Only the SSD is user upgradable**. The CPU is soldered onto motherboard. The RAM is soldered onto motherboard.
~If budget is limited, order of priority is for: More RAM.
~Therefore your own suggestion of 16 GB RAM is OK for future-proof your machine. Then your SSD. Lastly, your CPU.

(As an example, our old T410 recently user upgraded to max 8 GB RAM, and SSD. Same old CPU which is ancient by today's standards.
This T410 could do any one of these at a time: watch movies, browse internet, occasional gaming, or MS Excel work.).


2b) T470: Only the CPU is soldered onto motherboard. ie: RAM is user upgradable, and SSD/HDD is user upgradable** also.
www.notebookcheck.net/Lenovo-ThinkPad-T ... 130.0.html
~Therefore if budget is a consideration, T470 is easier to upgrade in the future, and T470 is more economical.


Anyways, we fully understand that the X1 Carbon is a very attractive machine ;)

Do have fun deciding!

[Note: '**' - if you do decide to unofficially upgrade your SSD while still under warranty, ThinkPad do not (should not) need to know about this!]
Daily Driver: X1 Carbon 4th Gen (X1C4): i7-6600U 2.6GHz; 16GB DDR3 1866 MHz; 1TB PCIe-NVMe SSD; 14" WQHD 2560x1440; LTE EM7455 Mobile Broadband; Win7 Pro 64bit
Current Thinkpads: X1C4 | X1C3 | X250 | X230 | T410
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Re: Which processor (i7 7500 vs i7 7600) should I choose?

#6 Post by ZaZ » Tue Aug 29, 2017 4:01 am

Given that you're not stressing the CPU much at all, I'd buy whatever is cheaper, which would be the i7-7500u in this case.
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Re: Which processor (i7 7500 vs i7 7600) should I choose?

#7 Post by robertgalp » Tue Jan 23, 2018 5:06 am

RealBlackStuff wrote:
Sat Aug 26, 2017 3:21 pm
i5 should be cheaper than i7.
http://www.cpu-world.com/Compare/857/In ... 7500U.html

Don't stare yourself blind on a few numbers.
Honestly, for your presumed use even an i3 would suffice!
There are a few minor differences like:

Hyperthreading: All i5 processors are Quad Core and hence have 4 physical cores serving 4 threads. All i7 processors also are Quad Core but they are equipped with Hyperthreading technology which enables each core to serve 2 threads, hence the OS sees it as an Octa Core Processor rather than a Quad Core Processor.

Cache Size: RAM minimizes the use of Hard Drive similarly Cache minimizes the use of RAM. The more the Cache size, the more data can be accessed quickly. Most i5 processors(if not all) have a cache size of around 4MB (3,4,5 or even 6MB in some of them) but almost all i7 Processors have 8MB cache, which is significantly more, thereby allowing more amount of data to be accessed quickly.

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Re: Which processor (i7 7500 vs i7 7600) should I choose?

#8 Post by jaspen-meyer » Tue Jan 23, 2018 12:45 pm

ZaZ wrote:
Tue Aug 29, 2017 4:01 am
Given that you're not stressing the CPU much at all, I'd buy whatever is cheaper, which would be the i7-7500u in this case.
Why a new x1 carbon? Used x1carbon from 2014 are 230 GBP on ebay.co.uk. When watching movies and browsing the web you could hardly tell the difference between that machine and the 1000 GBP i7-7500u.
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Re: Which processor (i7 7500 vs i7 7600) should I choose?

#9 Post by w0qj » Wed Jan 24, 2018 12:31 pm

X1 Carbon Generation 2 (X1C2) = circa 2014
Just to ensure that everyone is on the same page ;)
jaspen-meyer wrote:
Tue Jan 23, 2018 12:45 pm
Why a new x1 carbon? Used x1carbon from 2014 are 230 GBP on ebay.co.uk. When watching movies and browsing the web you could hardly tell the difference between that machine and the 1000 GBP i7-7500u.
Daily Driver: X1 Carbon 4th Gen (X1C4): i7-6600U 2.6GHz; 16GB DDR3 1866 MHz; 1TB PCIe-NVMe SSD; 14" WQHD 2560x1440; LTE EM7455 Mobile Broadband; Win7 Pro 64bit
Current Thinkpads: X1C4 | X1C3 | X250 | X230 | T410
Retired Thinkpads: T42 | 560 (circa 1996)
~~IBM Thinkpad era computer bag !

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