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View Full Version : 915P+DDR running CAS2-2-2-5. Better than 865PE/S775?



Salkcin
01-25-2005, 04:21 PM
Hi,

I wondered if a 915P+DDR platform can beat a 865PE+DDR platform when speaking of Socket 775 systems. The 915P platforms are pretty FSB limited (very few will do 250MHz FSB, but hey - the best 2x512MB BH5 does as well). So I thought - how would a 915P using regular DDR do with a 3.2GHz @4GHz running 1:1 (DDR500) CAS2-2-2-5 compared to a 865PE with the same setup? Only diffrence would be the chipset and all the nice bandwidths PCI-E offers.

The 915P got some advantages... it can use a X800XL (475$ 16 pipeline, 256MB GDDR3 256bit video card - that's cheap in Denmark. X800XT are priced ~650$ for the cheapest ones!).
The onboard NIC is placed on the PCI-E bus wich give more bandwidth for the harddrives - no 865/875 hybrid Socket 775 has a CSA bus
A PCI-E controller card can be bought in the future to support SATAII

Since the 865PE and 915P motherboards are priced the same and 915P has some small advantages - would it be worth choosing? The raw performance of the chipset can't make a big diffrence? I just haven't seen any CAS2-2-2-5 benchmarks of 915P yet...

Abit AG8 (915P/ICH6R), Asus P5GD1 (915P/ICH6R?) and Epox EP-5EPA+ (915P/ICH5R) are proberly the ones to choose to get past 250MHz FSB...

Salkcin
01-26-2005, 06:28 PM
No comments on this?

After I've done some research I found out none of these boards will do the 250MHz when using PCI-E peripherals... onboard NIC running on PCI-E has to be disabled and most videocards limit because of the PCI-Express is not locked - especially nVidia it seems. So the 915 series is dead... now it seems "we" need 925XE with DDR support. 14x300=4200MHz DDR600 CAS2.5-3-3-6 (TCCD) would be nice, but 925XE is proberly limited like the 865/875 so it won't run more than ~285MHz 1:1. A pitty noone makes such a platform...

Hybrid 865/875 remains the best Intel soloution :(