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03-01-2015

Charleston WV

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W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-01, 23:15 PM

Hi,

 

I'm getting ready to place an order for a W541.   Does anybody have any experience with the extreme edition processors in a W Series?   

 

If the main purpose of the extreme edition is the ability to overclock, does Lenovo support overclocking?

 

I'm currently running a W500 (over 6 years old)... I bought it maxed out and have no regrets.   As far as performance goes I could get another 2 years out of it... but it's physically wore out.

 

Primary use is applicaiton development (Visual Studio w/ SQL Server and IIS always running).   I also host my source control and task management software on the machine.   Some light Inventor / Autocad work as well.     

 

I work docked or pluged in 99% of the time... so power usage isn't an issue.

 

Any thoughts / experience with the i7-4940MX extreme edition would be appreciated.   

 

J.R.

 

 

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10979 Posts

01-02-2010

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-02, 0:10 AM
Because you said "As far as performance goes I could get another 2 years out of it..." I will say that the extreme edition is overkill. You will be going to a much faster processor anyway. Visual studio can be a resource hog, but for most kinds of development, disk processing is the bottleneck. I haven't priced the W541, but in most cases, the MX processors are a lot more money for a small increase in power. Also, they generate more heat, which can strain cooling and cause the CPU to be throttled down. If you said you were doing heavy AutoCAD work or did heavy Photoshop or Dreamweaver work, I would have a different answer. I suggest using the extra money to get more memory and a big SSD.

Rich


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275 Posts

10-26-2010

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-02, 14:12 PM

The w540/1 have some pretty bad cooling issues. To keep it short the 4940MX will thermally throttle long before you reach its improved performance, especially if the GPU is also working. At most, I would go with 4810MQ. If you are coming from W500, you really won't notice a difference between these slightly varying processors (above 4710MQ).


W540: i7-4700mq, K2100m, 16 GB RAM, 500 GB Samsung 840 EVO
T510: i7-620m, NVS 3100m, 8 GB RAM, 500 GB Samsung 840 EVO
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9605 Posts

12-27-2009

CA

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-02, 18:54 PM
I'd think the heatsink would be sufficient for a 4940MX if you don't have the discrete GPU active.

But as said, the MX is not enough bang for buck unless you really want every bit of CPU performance regardless of cost.

You could also consider one of the more niche custom laptop builds that include a desktop hex-core or something.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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182 Posts

06-17-2010

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-03, 1:23 AM

I have a W540 with the i7 4930MX CPU, and have had no thermal, or throttling issues, running high load photo post-processing programs for extended times (10 - 15 minutes). I use CPU-Z to monitor the CPU. I'm extremely happy with this W540 configuration.

 

I disagree with this statement:

 

The w540/1 have some pretty bad cooling issues. To keep it short the 4940MX will thermally throttle long before you reach its improved performance, especially if the GPU is also working. At most, I would go with 4810MQ. If you are coming from W500, you really won't notice a difference between these slightly varying processors (above 4710MQ).

 

 

I went from a W520, with a i7 2860QM CPU, to the W540 with the i7 4930MX CPU, and the W540 is much faster running the same photo post-processing programs. I'm running the same HDD in both systems (Seagate 1TB Hybrids, with 64MB cache). With the W540,  i'm running a 256GB SSD in the M.2 slot, with a 50GB partition which I'm using as a cache.

 

 

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31 Posts

02-15-2015

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-03, 10:10 AM

I like Passmark CPU Benchmarks a lot for these decisions.
    http://www.cpubenchmark.net/laptop.html

 

They give the 4940MX a rating of 9918 and the 4910MQ a rating of 9746. That is a negligible difference.

The 4930MX is rated slightly less than both at 9562.
    http://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i7-4940MX+%40+3.10GHz&id=2186
    http://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i7-4910MQ+%40+2.90GHz&id=2220
    http://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i7-4930MX+%40+3.00GHz&id=1985

It would seem the 4910MQ would work very well and allow you extra money for memory and SSD.

 

I think User Benchmark is a good site to compare SSDs.
    http://www.userbenchmark.com/

 

If you go for the DDR3 1866 memory then Corsair, Crucial and G.Skill test pretty much the same.
    http://www.memorybenchmark.net/ram.php?ram=Corsair+CMSX16GX3M2B1866C1+8GB&id=5133
    http://www.memorybenchmark.net/ram.php?ram=Crucial+Technology+BLS8G3N18AES4.16FE+8GB&id=3961
    http://www.memorybenchmark.net/ram.php?ram=G+Skill+Intl+F3-1866C10-8GRSL+8GB&id=4772

If you go for smoke with DDR3 2133 Corsair tests faster than G.Skill, but costs more. I haven't seen Corsair at this speed online.
    http://www.memorybenchmark.net/ram.php?ram=Corsair+CMSX16GX3M2B2133C1+8GB&id=5353
    http://www.memorybenchmark.net/ram.php?ram=G+Skill+Intl+F3-2133C11-8GRSL+8GB&id=6003


I personally use the Samsung 850 Pro 256GB for boot and the G.SKILL Ripjaws DDR3 2133 (PC3 17000) for memory. I shopped these at Newegg.com. They are a good match to the 4900MQ. For common office type work I see no difference between the 4900MQ and the 4700MQ (benchmarked at Passmark 9000) using the same boot disk and memory.

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31 Posts

02-15-2015

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-03, 10:13 AM
Typo: I haven't seen DDR3 2133 Crucial memory online.
It seems to be only Corsair and G.Skill at that speed.
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182 Posts

06-17-2010

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-03, 14:06 PM

The w540/1 have some pretty bad cooling issues. To keep it short the 4940MX will thermally throttle long before you reach its improved performance, especially if the GPU is also working. At most, I would go with 4810MQ. If you are coming from W500, you really won't notice a difference between these slightly varying processors (above 4710MQ).

 

Using your recommended CPU benchmark website, the i7 4810MQ is rated much lower than the i7 4930MX, or i7 4940MX:

 

 

http://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i7-4810MQ+%40+2.80GHz&id=2196

 

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9605 Posts

12-27-2009

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-03, 15:20 PM
Also bear in mind that the MX is probably benched at stock clocks rather than overclocked. How much more performance you can get out of each chip is luck of the draw though.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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3 Posts

03-01-2015

Charleston WV

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Re: W541 - Benefit of Core i7-4940MX Extreme Edition

2015-03-03, 22:17 PM

Takeda,

 

What graphics card are you running in the W540 with the i7 4930MX?

 

 

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