Ok I am having a little trouble with the current crop of PSU calculators on the web giving accurate readings. Mainly that the one on NewEgg gives me twice what others quote so hoping someone can shed some light on the subject.
My current setup - 500w Antec Smartpower modular PSU
Processor - Athlon X2 2.7ghz 7750 Kuma
CPU cooler -Rosewill RCX-Z940-SL 92mm 2 Ball CPU Cooler
Mobo - Gigabyte GA-MA770-UD3
GPU - SAPPHIRE 100265L Radeon HD 4830 512MB
RAM - Kingston HyperX 8GB (4 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066
Optical Drive - ASUS 22X DVD Burner with LightScribe SATA DRW-22B1LT
HDD#1 -Western Digital Caviar Blue WD3200AAJS 320GB 7200 RPM SATA
HDD#2 -Western Digital RE3 WD5002ABYS-01B1B0 500GB 7200 RPM SATA
HDD#3 -Western Digital Caviar RE WD2500YD 250GB 7200 RPM
Antec 300 w/ 2 LED 120mm intake fans, 1 120mm exhast fan, 1 140mm exhaust fan
Vista ultimate 64bit
now the plan is at some point to drop a Phenom II 940 and Sapphire Vapor-X 4870 in using all the same equipment and PSU however when I look up a PSU calculator the majority of them give me a required wattage of 350w-400w give or take, NewEgg's version says closer to 700w, 700w seems extremely high to me as a 650w is the recommended amount for 2 4870's in crossfire. Can anyone point me in the direction of the right answer, or even a closer to correct answer then i am getting now? All the time and effort spent helping me on this is much appreciated, thank you ahead of time.
My current setup - 500w Antec Smartpower modular PSU
Processor - Athlon X2 2.7ghz 7750 Kuma
CPU cooler -Rosewill RCX-Z940-SL 92mm 2 Ball CPU Cooler
Mobo - Gigabyte GA-MA770-UD3
GPU - SAPPHIRE 100265L Radeon HD 4830 512MB
RAM - Kingston HyperX 8GB (4 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066
Optical Drive - ASUS 22X DVD Burner with LightScribe SATA DRW-22B1LT
HDD#1 -Western Digital Caviar Blue WD3200AAJS 320GB 7200 RPM SATA
HDD#2 -Western Digital RE3 WD5002ABYS-01B1B0 500GB 7200 RPM SATA
HDD#3 -Western Digital Caviar RE WD2500YD 250GB 7200 RPM
Antec 300 w/ 2 LED 120mm intake fans, 1 120mm exhast fan, 1 140mm exhaust fan
Vista ultimate 64bit
now the plan is at some point to drop a Phenom II 940 and Sapphire Vapor-X 4870 in using all the same equipment and PSU however when I look up a PSU calculator the majority of them give me a required wattage of 350w-400w give or take, NewEgg's version says closer to 700w, 700w seems extremely high to me as a 650w is the recommended amount for 2 4870's in crossfire. Can anyone point me in the direction of the right answer, or even a closer to correct answer then i am getting now? All the time and effort spent helping me on this is much appreciated, thank you ahead of time.