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Old 09-24-2013, 03:46 AM   #1
Richard14
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Large speed difference with 3 PC's


Please could someone explain reason that on the same network (using 1 at a time) the large difference in speed upload and download from one PC to another. First PC did about 13.65Mbps download second PC did 67.00Mbps Third PC did 9.00Mbps.

The Third was the oldest, First PC was purchased 2005, and Second PC was Purchased 2012.

Is it just the processor speed or is there onther factors and what are these?

Last edited by Richard14; 09-24-2013 at 03:51 AM. Reason: Added more
 
Old 09-24-2013, 04:02 AM   #2
druuna
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You mention upload/download but not what you actually used to do so.

If, for example, ssh/scp/sftp is used then the files need to be encrypted and decrypted, which is a cpu action. Slower cpu's take longer to do this and this might explain the overall speed difference.

Overall disk speed (disk speed itself and i/o load) and other network usage might also come into play.
 
Old 09-24-2013, 05:22 PM   #3
jefro
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The brand of nic, the quality of nic, quality/install of cables, driver for nic, settings for checksum offload, backplane speeds, memory access speeds, kernel tuning, dunno, maybe 15 more things.
 
Old 09-25-2013, 04:36 AM   #4
Richard14
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I only just have had infinity installed (23 Sept)and have only tested upload & download speeds using speedtest.net. All 3 Laptop computers were used one at a time on the same network within 1 hour time slot (14:00 to 15:00). Not sure if the cables are the same but were fitted at the same time about 3 years ago, the same cable was used on the first (12.65MbpsUP/ 3.50MbpsDown) and second laptop. speed difference was about 4 times more on the newer laptop (67.50MbpsUP/ 13.40MbpsDown).

The reason I would like what causes such a large differences is so I can pick the right new kit of components in my next upgrade of my old Dell 2400 Dimmension Tower PC runing OS Ubuntu12.04 this Pc is at a different address than the laptops.

Thank you both for the information you given, this very helpfull.

Richard
 
Old 09-25-2013, 05:00 PM   #5
jefro
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"Dell 2400 Dimmension Tower PC " If that is what I think it is, you could easily saturate the entire system on a fast nic. No part of that old system is very fast. Maybe the worst is the ata transfer speeds to the eide 5400 rpm drive.
 
Old 09-27-2013, 04:22 AM   #6
Richard14
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I do not have infinity at my house. (only 1.9Mbps UP 0.38 DOWN)
My Dell 2400 Dimension Tower PC running OS Ubuntu12.04.
I have fitted Corsair TX550M PSU with 2 x PCI-E 6 & 8 pin compatible, 6 x SATA plugs.
What I would like to do is use the case (if possible I have other old cases) and PSU and change all the rest. Main PCB Graphics Card HD etc.
I will be using the new PC for recording/edit/playback videos burning to DVD, RAW, JPEG edit and burning to CD or DVD.
I would like to be up to date but necessary top of spec. and have 64 bit processor and NOT secure boot of MS/Windows......

Also I would like to use SSD as first drive and second drive would mechanical.

Question 1/ Could anyone recommend suitable kit including 24” to 27” Display
 
Old 09-27-2013, 06:31 AM   #7
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I'd pull the new PSU from the Dell 2400 Dimension, put the old one back in and sell it. As far as I know they use a proprietary motherboard mounting system, and its a real pain to try to replace the board. Also, its not a great idea to install new 'non-dell' PSUs with late 90s/early 00 dells, they sometimes use proprietary power supplies (which look exactly the same as standard ATX PSUs, just they have different wiring).

Location (I'd assume UK), and budget would help.

BTW, its getting hard to find motherbaords without win8 UEFI secure boot now. Not really an issue, you can disable secure boot if you wish.
 
Old 09-28-2013, 04:30 AM   #8
Richard14
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Quote:
Originally Posted by jefro View Post
The brand of nic, the quality of nic, quality/install of cables, driver for nic, settings for checksum offload, backplane speeds, memory access speeds, kernel tuning, dunno, maybe 15 more things.
Thanks jefro for this, could you advise make and type of nic that I should look for or main broad. Would it be best to purchase off the shelve PC ?
 
Old 09-28-2013, 04:37 AM   #9
Richard14
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Quote:
Originally Posted by cascade9 View Post
I'd pull the new PSU from the Dell 2400 Dimension, put the old one back in and sell it. As far as I know they use a proprietary motherboard mounting system, and its a real pain to try to replace the board. Also, its not a great idea to install new 'non-dell' PSUs with late 90s/early 00 dells, they sometimes use proprietary power supplies (which look exactly the same as standard ATX PSUs, just they have different wiring).

Location (I'd assume UK), and budget would help.

BTW, its getting hard to find motherbaords without win8 UEFI secure boot now. Not really an issue, you can disable secure boot if you wish.
Thanks cascade9 Yes I am in midlands of England.
I was thinking some time ago of a iMac 27" but not to sure about Apple's grip of all software and their prices and I like Linux open software and philosophy.
 
Old 09-28-2013, 06:13 AM   #10
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Quote:
Originally Posted by Richard14 View Post
I was thinking some time ago of a iMac 27" but not to sure about Apple's grip of all software and their prices and I like Linux open software and philosophy.
I woudlnt. Though I should admit I'm not a big fan of apple. But you can get more power for a lot less cost, with the added bonus of using 'off the shelf' standard x86 parts (for example, 16GB (2 x 8GB) for a late 2013 imac is 320 pounds from apple...the same from crucial is about 100 pounds....) and its a lot easier to get into a standard case than the imacs.

27'' imacs-

Quote:
27-inch: 3.2GHz

3.2GHz quad-core Intel Core i5
Turbo Boost up to 3.6GHz
8GB (two 4GB) memory
1TB hard drive1
NVIDIA GeForce GT 755M with 1GB video memory

Dispatched:
Within 24 hours
Free Delivery
1,599.00


27-inch: 3.4GHz

3.4GHz quad-core Intel Core i5
Turbo Boost up to 3.8GHz
8GB (two 4GB) memory
1TB hard drive1
NVIDIA GeForce GTX 775M with 2GB video memory

Dispatched:
Within 24 hours
Free Delivery
1,749.00
http://store.apple.com/uk/mac/family/imac

You could get a newer and about the same speed CPU, same amount but faster memory, 128GB SSD + 1TB HDD and a 27'' monitor running the same resolution as the imac for 1100 quid or less.

Quote:
Processor

Description :Intel Core I5 4430 Processor

Cache :6MB

Clockspeed :3.0Ghz

Manufacturer :Intel

Supports Virtualisation :Yes

No. of Cores :4


Memory

Description :2 X 4GB DDR3 1600Mhz Memory

Speed :1600Mhz


Harddrive

Description : 128GB Solid State Hard Drive

Description : 1TB 3.5" 7200rpm SATA Hard Drive

Interface :SATA

Interface :Sata 6Gb/s

Technology :SSD
http://www.novatech.co.uk/pc/range/n...lacknti78.html

Quote:
Dell UltraSharp U2713HM 27" Widescreen LED Monitor
16:9, 2560 x 1440 Full WQHD Resolution, 8ms response time, Contrast Ratio 2,000,000:1, VGA, DVI, HDMI and DisplayPort Inputs, 3 Year Onsite Warranty
http://www.novatech.co.uk/products/m...s/u2713hm.html

*edit- there are other monitors, and I'm not suggesting that linked computer is the best for you, its just an example of how you can spend less on standard parts and beat apple.

Last edited by cascade9; 09-28-2013 at 06:16 AM.
 
Old 09-29-2013, 04:44 AM   #11
Richard14
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Thanks cascade9 and yes I agree with what you are saying I will give novatech a ring.

What do you think of AMD Processors rather than Intel?

Thanks for time and help

Richard
 
Old 09-29-2013, 06:11 AM   #12
cascade9
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I prefer AMD CPUs myself. There was a time when AMD was all round the best x86 CPUs you could buy, those days are over. Currently, you pretty much get wat you pay for...the intel CPUs are a little more expensive for any given performance level, but they use a bit less power so the costs over the lifespan of the computer is very simialr for AMD vs Intel.

If you did get an AMD, and were going to get it from novatech, I'd suggest asking them about some parts substutution on this base system-

http://www.novatech.co.uk/pc/range/n...lacknta12.html

I'd get a better PSU (unless you can use your Corsair TX550M, they are good PSUs), a better CPU heatsink and change the video card to either a lower end AMD or nVidia (assuming you dont play games)

CPU heatsink- Coolermaster Hyper 212 EVO (+ 26.99)-

http://www.novatech.co.uk/products/c...e-16pk-r1.html

ASUS GeForce GT 620 (+34.99, but the HD 7770 listed in the system I linked about is about 70 so you should save some money there)-

http://www.novatech.co.uk/products/c...1gd3-l-v2.html

I'd consider getting an upgrade to a FX-8350 or a SSD as well.
 
Old 09-30-2013, 03:45 AM   #13
Richard14
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Thank you.....very helpful and informative...

Richard
 
Old 09-30-2013, 07:00 AM   #14
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No problem.
 
Old 02-03-2014, 02:27 AM   #15
Richard14
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An interesting point:-

The oldest Laptop an HP ZV5232 ? speed changed by more 4 times !

It was running XP I installed Mint14 and download speed went from 16Mbps to 55Mbps


So ut's the SOFTWARE ?
 
  


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