ram help

[soultrader]

please can you point me in the right direction for some better ram i have around £160 to spend,,,my system specs using SiSoftware Sandra are:-

Computer
Model : System manufacturer P5K3 Deluxe
Workgroup :
Host Name :
User : soultrader

Processor
Model : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
Speed : 3.83GHz
Cores per Processor : 4 Unit(s)
Threads per Core : 1 Unit(s)
Type : Quad-Core
Integrated Data Cache : 4x 32kB, Synchronous, Write-Thru, 8-way, 64 byte line size
L2 On-board Cache : 2x 6MB, ECC, Synchronous, ATC, 24-way, 64 byte line size, 2 threads sharing

Computer
Mainboard : Asus P5K3 Deluxe
BIOS : AMI 1203 10/20/2008
Bus(es) : ISA X-Bus PCI PCIe IMB USB i2c/SMBus
Multi-Processor (MP) Support : No
Multi-Processor Advanced PIC (APIC) : Yes
Total Memory : 4GB DIMM DDR3

Chipset
Model : ASUS P35/G33/G31 Processor to I/O Controller
Front Side Bus Speed : 4x 450MHz (1.8GHz)
Total Memory : 4GB DIMM DDR3
Memory Bus Speed : 2x 720MHz (1.44GHz)

Memory Module(s)
Memory Module : Corsair CM3X1024-1333C9DHX 1GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-24 4-33-10-5)
Memory Module : Corsair CM3X1024-1333C9DHX 1GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-24 4-33-10-5)
Memory Module : Corsair CM3X1024-1333C9DHX 1GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-24 4-33-10-5)
Memory Module : Corsair CM3X1024-1333C9DHX 1GB DIMM DDR3 PC3-10700U DDR3-1334 (9-9-9-24 4-33-10-5)

Video System
Video Adapter : ATI Radeon HD 5800 Series (1600 SM4.1 850MHz, 1GB DDR5 4x1.2GHz, PCIe 2.00 x16)

Graphics Processor
Adapter : ATI Radeon HD 5800 Series (1600SP 20C 850MHz, 1GB 1.2GHz)

Storage Devices
SAMSUNG HD501LJ (500.1GB, SATA300, 3.5", 7200rpm, NCQ, 16MB Cache) : 466GB (E (F (G (H
WDC WD5000AADS-00S9B0 (500.1GB, SATA300, 3.5", NCQ, 32MB Cache) : 466GB (M
WDC WD360GD-00FLA1 37GB (SATA150, 8MB Cache) : 34GB (D
WDC WD360GD-00FLA1 37GB (SATA150, 8MB Cache) : 34GB (C
HP DVD Writer 1070d (SATA150, DVD+-RW, CD-RW, 2MB Cache) : 2kB (I
UTOH 4LYZK5AVS (SCSI, BD-R, HD-DVD-R, DVD+-R-DL, CD-R) : N/A (L
EF0393O DMJ850B (SCSI, SCSI-2, DVD+-R-DL, CD-R, 512kB Cache) : N/A (J

Logical Storage Devices
New Volume (G : 199MB (NTFS) @ SAMSUNG HD501LJ (500.1GB, SATA300, 3.5", 7200rpm, NCQ, 16MB Cache)
vista64 (E : 75GB (NTFS) @ SAMSUNG HD501LJ (500.1GB, SATA300, 3.5", 7200rpm, NCQ, 16MB Cache)
M (H : 244GB (NTFS) @ SAMSUNG HD501LJ (500.1GB, SATA300, 3.5", 7200rpm, NCQ, 16MB Cache)
L (F : 146GB (NTFS) @ SAMSUNG HD501LJ (500.1GB, SATA300, 3.5", 7200rpm, NCQ, 16MB Cache)
new windows (M : 466GB (NTFS) @ WDC WD5000AADS-00S9B0 (500.1GB, SATA300, 3.5", NCQ, 32MB Cache)
Hard Disk (D : 34GB (NTFS) @ WDC WD360GD-00FLA1 37GB (SATA150, 8MB Cache)
Hard Disk (C : 34GB (NTFS) @ WDC WD360GD-00FLA1 37GB (SATA150, 8MB Cache)
Optical Drive (I : N/A @ HP DVD Writer 1070d (SATA150, DVD+-RW, CD-RW, 2MB Cache)
3.5" 1.44MB (A : N/A
Optical Drive (L : N/A @ UTOH 4LYZK5AVS (SCSI, BD-R, HD-DVD-R, DVD+-R-DL, CD-R)
Optical Drive (J : N/A @ EF0393O DMJ850B (SCSI, SCSI-2, DVD+-R-DL, CD-R, 512kB Cache)

Peripherals
LPC Hub Controller 1 : ASUS (ICH9) LPC Interface Controller
LPC Legacy Controller 1 : Winbond W83627DHG
Audio Device : ATI (AMD) AA50h
Audio Device : ASUS Virtuoso 200 (Xonar D2)
Audio Codec : Gammagraphx 0000h
Audio Codec : Gammagraphx 0000h
Serial Port(s) : 1
Disk Controller : ASUS (ICH9) 4 port Serial ATA Storage Controller 1
Disk Controller : ASUS (ICH9) 2 port Serial ATA Storage Controller 2
Disk Controller : ASUS JMB36X PCIE-to-SATAII/IDE RAID Controller
USB Controller 1 : ASUS (ICH9) USB Universal Host Controller
USB Controller 2 : ASUS (ICH9) USB Universal Host Controller
USB Controller 3 : ASUS (ICH9) USB Universal Host Controller
USB Controller 4 : ASUS (ICH9) USB2 Enhanced Host Controller
USB Controller 5 : ASUS (ICH9) USB Universal Host Controller
USB Controller 6 : ASUS (ICH9) USB Universal Host Controller
USB Controller 7 : ASUS (ICH9) USB Universal Host Controller
USB Controller 8 : ASUS (ICH9) USB2 Enhanced Host Controller
SMBus/i2c Controller 1 : Intel 801xx/63xx SMBus

Printers and Faxes
Printer : Microsoft XPS Document Writer (600x600, Colour)

Network Services
Network Adapter : Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC (NDIS 6.0) (Ethernet, 100Mbps)
Network Adapter : Marvell Yukon 88E8056 PCI-E Gigabit Ethernet Controller

Power Management
Mains (AC) Line Status : On-Line

Operating System
Windows System : Microsoft Windows Vista Home 6.00.6002 (Service Pack 2)
Platform Compliance : x64

Windows Experience Index
Current System : 5.5