Generally speaking that should be just fine. But a lot depends upon the types of things that you do with your computer. For example, if you are a higher risk user and take chances with pirated software, porn sites, etc....then you might need stronger protection.
System Manufacturer/Model Number Self-Built in July 2009 OS Windows 7 Ultimate x64 CPU Intel Q9550 2.83Ghz OC'd to 3.40Ghz Motherboard Gigabyte GA-EP45-UD3R rev. 1.1, F12 BIOS Memory 8GB G.Skill PI DDR2-800, 4-4-4-12 timings Graphics Card EVGA 1280MB Nvidia GeForce GTX570 Sound Card Realtek ALC899A 8 channel onboard audio Monitor(s) Displays 23" Acer x233H Screen Resolution 1920x1080
Keyboard ABS M1 Mechanical Mouse Logitech G9 Laser Mouse PSU Corsair 620HX modular Case Antec P182 Cooling stock Hard Drives Intel X25-M 80GB Gen 2 SSD
Western Digital 1TB Caviar Black, 32MB cache. WD1001FALS Internet Speed 15/2 cable modem Other Info Windows and Linux enthusiast. Logitech G35 Headset.
System Manufacturer/Model Number hp pavilion p6045uk OS windows 7 home premium 64bit CPU intel core2quad q8200 Motherboard asus ipibl-lb Memory 6gb Graphics Card ati radeon hd4350 Sound Card realtek hd audio Monitor(s) Displays hp 2159m Screen Resolution 1920x1080
Keyboard basic hp wireless Mouse basic hp wireless PSU 300 Hard Drives 1 tb Internet Speed up to 20mb(in reality 5mb) wireless
System Manufacturer/Model Number HP Pavilion p6795a OS windows 7 64 bit CPU intel core i5 3.30GHz Quad Core Motherboard HP Memory 6gb Graphics Card AMD RADEON HD 6450 1GB Dedicated Sound Card ATI HIGH DEFINITION SOUND Monitor(s) Displays LG Screen Resolution 16:9 Hd
Keyboard Wireless Mouse HP wireless keyboard and mouse Cooling Fan Hard Drives 1TB Internet Speed fast enough Other Info Beast Of A Machine!
I use MSE (Defender built in) and Windows Firewall which are doing a fantastic job of keeping my PC clean. As already mentioned, it depends on your needs as to what is classed as good.
System Manufacturer/Model Number HP Touchsmart IQ771.uk OS Windows 7 Ultimate x64 CPU AMD Turion(tm) 64 X2 Mobile Technology TL-56 Motherboard ASUS Pheonix Memory 3GB Nanya PC2-6400 DDR2-SDRAM SO-DIM (400MHz) Graphics Card NVIDIA GeForce Go 7600 256MB GDDR3 SDRAM Sound Card High Definition Intergrated NVIDIA MCP51 Monitor(s) Displays 46" Sony Bravia HDTV Screen Resolution 1600x1200
Hard Drives 1.5TB Samsug
320GB Seagate ST3320820AS - SATA 3Gb/s 8MB
500GB Maxtor Basics STM305003EHD301-RK Internet Speed ↓6.32 Mb/s ↑0.35 Mb/s ↔26ms Other Info BIOS - American Megatrends Inc. 5.07
Ethernet Port - NVIDIA nForce 10/100/1000 Mbps
DVD Drive - TSSTcorp DVDR/RW TS-T632L