Upgrade from 4 gb to 8gb do i need new sticks

[damage145]

I have a DFI lan party DK x38-t2rb motherboard, IT has 4 slots for ram on it, I want to upgrade from 4GB to 8GB i currently Have 2 2gb sticks of G Skill F2-8500CL5-2GBPI with voltage of 2.1v and timing of 5-5-5-15 they are ddr2 -1066 sticks

This is an everest memory module properties thing, Im basically trying to get to 8gb and wanted to know if i needed to buy 2 more sticks of this or if i could get 2 more sticks of a better ram or if they need to be the same or not, And what ram i should get thats good and moderalety priced

Field Value
Memory Module Properties
Module Name G Skill F2-8500CL5-2GBPI
Serial Number None
Module Size 2 GB (2 ranks, 8 banks)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-800 (400 MHz)
Module Width 64 bit
Module Voltage SSTL 1.8
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh

Memory Timings
@ 400 MHz 5-5-5-15 (CL-RCD-RP-RAS) / 24-51-3-6-3-3 (RC-RFC-RRD-WR-WTR-RTP)
@ 266 MHz 4-4-4-10 (CL-RCD-RP-RAS) / 16-34-2-4-2-2 (RC-RFC-RRD-WR-WTR-RTP)

Enhanced Performance Profile
Profile Name High Performance
Optimal Performance Profile Yes
Memory Speed DDR2-1066 (533 MHz)
Voltage 2.1 V
Memory Timings 5-5-5-15 (CL-RCD-RP-RAS)
Row Cycle Time (tRC) 48T
Command Rate (CR) 2T
Write Recovery Time (tWR) 13T

Memory Module Features
Analysis Probe Not Present
FET Switch External Disabled
Weak Driver Supported

Memory Module Manufacturer
Company Name G.Skill International Enterprise
Product Information http://www.gskill.com/products.php

 

[Guest]

Just get another matching set of 2x2GB DDR2 1066Mhz 5,5,5,15 sticks and place them into the second bank, they do not have to be the same make as the first two, just match the speed and timings and make sure each bank has matching pairs. (G Skill in 1 bank New Sticks 2x2GB in 2nd bank)