Promise TX4 vs Silcon Image

[Spider]

I'm currently using a Silcon Image (v2) IDE RAID controller card. It's hooked to two 40gig WD 8mb Cache drives. I just picked up a a Promise Tx4 (older one) which is a 4-channel card. If I still only used the 2 drives would there be any speed benefit in switching to this card?

I also have a WD 80g 8mb Drive. Would running 2 of these be faster then the 2 40g?

I also thought about picking up another 40g & running a 3 disk array.

Any thoughts would be appreciated.

Current ATTO Scores:
.5 11k/11k
1 2k/21k
2 15k/38k
4 34k/53k
8 56k/61k
16 65k/62k
32 72k/67k
64 75k/73k
128 76k/74k
256 75k/76k
512 75k/76k
1024 76k/76k

[primesuspect]

I've heard that the SI is a tib faster, So I don't think it's worth switching. I've been using Promise controllers since they started, and I've never liked them. All of the RAIDs I've ever lost have been on Promise controllers. I would say to stick with the SI.

[Mt_Goat]

Stick with the SI as it is faster. You could probably tweak your array with the Latency Guide at the end of this thread (http://www.short-media.com/forum/showthread.php?s=&threadid=195) (last post). As far as an 80 being faster; nope, it is the same drive but with 2 platters so the density is the same and that is where the difference in speed would come into play, but not here.

[Spider]

Thanks for the input guys.

I have tried tweaking the latency. from 64 all the up to 248. I never really saw much of a difference. I also tried the Breeze latency patch and that seemed to make things slower.

How do my Atto scores look?

I have an A7v333 v1.02, 2500+@2255, 1gig pc2700 (512x2)

[primesuspect]

Those attos are pretty good....

[Spider]

Hey guys thanks for all the help and input. I think I'll stick with the SI card and sell the Promise for what I paid for it.