Add to or replace?

[Pilgrim3]

Wishing to increase from 4 to 8 GB of RAM would there be any advantage in replacing the 4GB kit with an 8GB kit over adding another 4?

With thanks,Pilgrim3.


Gigabyte GA-P35-DS3R (rev. 2.1)
Intel Core 2 Quad Q6600 2.4GHz
2 x 36 GB Serial ATA Raptor drive (O/S only)
4 x Seagate barracuda 7200.11 SATA 3Gb/s 500-GB drives(storage)
Hauppauge WinTV HVR 4000 Quad Mode Analogue, DVB-S2, DVB-S, DVB-T HD TV Tuner (HVR4000)
Windows Vista Home Premium 64-bit.
Zalman CNPS9700 NT CPU cooler.
Auzen X-Fi Prelude 7.1
Silverstone Strider ST1000 PS
iCute Super18 tower case.
G-Skill 2 x 2GB matched modules PC2 6400 DDR2-800 Ram.
XFX PV-T88P-ysd4 xXx Edition Zalman Fan Black PCB Geforce 8800GT 512Mb gddr3 pci-e 2.0 SLI Video card

[GSKILL TECH]

increase to 8GB of memory, you can open more programs but doesn't really increase PC performance tho

[Pilgrim3]

Add to or replace?

Let me try and be more precise.
I already have 4GB of memory.
I have two choices...1)Remove the 4GB kit and replace with a 8GB kit.
or
2)Add a second 4GB kit.
Would either method be better than the other?

[G.SKILL]

for the performance, they are the same
but 2 sticks would have better compatibility
thanks


G.S