Old system, mixed ram MHZ went down?

[Confused2018]

System bios is set to auto to handle the ram as I have no idea. Asus bios 0202

 

M/B is an Asus P5e vm do(I thought the system had 8gb, but only had 6)

 

I used HWinfo and ran the system with the 4gb  of 2 gig ram sticks. pc2-6400 ddr2 kingston hp5189-2180-hye this was original to the system.

Current memory clock 400.00 mhz (6:5) ratio

Current timing 6-6-6-18

 

So I added another 4 gigs. 2 x 2 gig of CORSAIR PC2-6400 800MHZ XMS2 CM2X2048-6400C5.  Specs look to match i.e voltage etc.

Current memory clock 333.00 mhz (1:1) ratio

Current timing 5-5-5-15

 

the Bios has this message: Dram freq is determined by FSB strap and FSB freq. while FSB strap is set as 200, 266 or 333 and fsb freq is over 240, 320 or 400 respectively one more freq item becomes available.

 

1) why the drop/ what did I miss? 

2) should I replace the kingston or the Corsair ram?

3) Leave as is 400 to 333 is a small drop

 

Cant afford to burn this system out.

 

Ideas/Suggestions?

 

Thanks!

 

 

 

[Confused2018]

Anyone?