SLOW SPEED ON XP PC BUT FULL SPEED ON W7 PC

Hi I was wondering if anyone else had this problem???

After recently upgrading to Plusnet Fiber optic plus I was hugley dissapointed not to recieve the full speeds that I had been promised

To cut a long story short I discovered that I could only recieve speeds of over 30mbps on a pc using windows7 and on my main pc which uses XP the speed seems to be capped at 16mbps.

I would be hugely grateful if someone could suggest how I can adjust my lan setting to fix this problem (if indeed that is the cause)

Thanks in advance

Probably your RWIN, use Tcpoptimizer to adjust http://www.speedguide.net/downloads.php

Is this wired or wifi?

Edited by BatBoy (Thu 23-Feb-12 20:24:58)

How is the XP machine connected to the router - ethernet cable or wireless? Try again with a cable if it is currently wireless.

Additionally you may benefit from optimising your TCP/IP stack parameters. This is a link to one of several freely available tools that can help with that http://www.speedguide.net/downloads.php

Be sure to read some of the documentation linked from that page before proceeding with it.

It's a wired connection

ethernet cable directly from the router...

Edited by Tipper2772 (Thu 23-Feb-12 20:28:56)

What sort of processor and memory? If a really old and low spec PC it may not manage higher speeds

i know this may sound a bit stupid but do you have spotify installed on your xp computer and not your windows 7 computer...

the reason i say this is that it happend to me. i was getting a full 50mb on my computer then after installing spotify i was only getting a maximum of 23mb this carried on for 2 weeks until i realised, uninstalled spotify and tada back up to 50mb.

In reply to a post by MrSaffron:

What sort of processor and memory? If a really old and low spec PC it may not manage higher speeds

It's a pentium 4 with 4gb of ram installed - Pakard bell imedia 2005 ( I'm thinking it should be ok)

In reply to a post by azzercam:

i know this may sound a bit stupid but do you have spotify installed on your xp computer and not your windows 7 computer...

the reason i say this is that it happend to me. i was getting a full 50mb on my computer then after installing spotify i was only getting a maximum of 23mb this carried on for 2 weeks until i realised, uninstalled spotify and tada back up to 50mb.

nope - nothing streaming or using bandwidth..(that i can think of)

In reply to a post by BatBoy:

Probably your RWIN, use Tcpoptimizer to adjust http://www.speedguide.net/downloads.php

Is this wired or wifi?

I tried this tool with optimum settings at 40mbps and rebooted (it seems to have made it a little worse )

« SpeedGuide.net TCP Analyzer Results »
Tested on: 2012.02.23 15:51
IP address: 46.208.xx.xxx
Client OS/browser: Windows XP (Firefox 6.0.2)

TCP options string: 020405ac0103030401010402
MSS: 1452
MTU: 1492
TCP Window: 1027840 (NOT multiple of MSS)
RWIN Scaling: 4 bits (2^4=16)
Unscaled RWIN : 64240
Recommended RWINs: 63888, 127776, 255552, 511104, 1022208
BDP limit (200ms): 41114kbps (5139KBytes/s)
BDP limit (500ms): 16445kbps (2056KBytes/s)
MTU Discovery: ON
TTL: 52
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)


these are the results of the analyzer