I am buying a new computer via a well known company's web configurator and have chosen everything I need, there is just one thing I am not sure about.

The processor suggested is Intel Pentium 4 530 3GB but there is an upgrade option and I wonder if paying £85 quid more for the 3.4GB is justified? I am ordering lGB of 400MHZ DDR RAM PC 3200 and 160GB SATA HDD, 256MB Radeon graphics with XP Pro. I use my computer extensively for graphics oriented tasks such as digital photography and web design and I am a person who gets very impatient if I cannot multitask or if my apps don't open fast. Do I need the bigger processor?