5850 & 5870 rig hashes not same on Slush's pool???

[tatsuchan]

I'm getting 355 out of my 5850 and 409 out of my 5870.  Average total mh around 765 on gui miner.  On my account page I'm getting a 536 megahash average.  I had to switch a router yesterday, but it has been 24 hours since, and I'm wondering if I messed something up.  ANY advise on how to correct things, or possibly make this rig more efficient please reply.  Stats as followed.

2.8ghz Intel Core Duo/ 4GB RAM/ 850w Power

GUI MINER PHOENIX

5850 OC to:
GPU 950
MEMORY 452
VOLTAGE 1124
TEMP:63C
-k phatk AGGRESSION=11 BFI_INT VECTORS FASTLOOP=false PLATFORM=0


5870 OC to:
GPU 925
MEMORY 500
VOLTAGE 1099
TEMP:63C
-k phatk VECTORS BFI_INT AGGRESSION=10 WORKSIZE=128

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[kliffen]

Have you checked what the pool site has been giving you more than once? Variations aren't uncommon, so if you only checked once, check again. If it's persistent at around 500mhash/s something is wrong

[ssateneth]

shares are subject to the exact same luck as finding blocks. you just have bad luck finding shares.

make sure ur stales are low too.

also phatk is old. find phatk2, its much faster.
your memory speed is really weird. you want around 300 for worksize 256 and around 150 for worksize 128, but it doesnt appear that you are using a worksize either. no wonder your mhash is so low.

[tatsuchan]

I changed work size to 256 and clock to 300.  Got about 7 to 8 better mh on both cards!  Brilliant.

ALSO found out the problem.....my router hasn't been staying connected.  Dropping for 2 seconds to 10 minutes at a time dozens of times throughout the day.  Getting new router tomorrow.  Hopefully that solves the issue. 

[swissmate]

-k phatk2 might get you better hashrate

[GernMiester]

Install DDWRT on the router if you can. Its better than just about every stock firmware.
Its free and may fix your router connection issues