Would appreciate your advice where to buy two more RAM chips

[glnz]

At home, I have a Dell Optiplex 755 running WinXPPro SP3, currently with 2GB RAM. Thinking about buying 2GB more for a total of 4GB RAM. Where should I go to do that? My existing RAM chips are as follows (from PC Wizard 2010):

Information SPD EEPROM (DIMM_1) :
Manufacturer : Elpida
Part Number : EBE10UE8ACWA-6E-E
Serial Number : 220D20C3
Type : DDR2-SDRAM PC2-5300 (333 MHz) - [DDR2-666]
Format : Regular UDIMM (133.35 x 3)
Size : 1024 MB (1 ranks, 8 banks)

Information SPD EEPROM (DIMM_2) :
Manufacturer : Elpida
Part Number : EBE10UE8ACWA-6E-E
Serial Number : 220D20C4
Type : DDR2-SDRAM PC2-5300 (333 MHz) - [DDR2-666]
Format : Regular UDIMM (133.35 x 3)
Size : 1024 MB (1 ranks, 8 banks)

​

Whom do you recommend as a reputable but super-discount supplier to buy two more of the same? (I have four slots, of which only two are used per above.)

Thanks.

 

[Whyfly??]

Do you have a 32bit OS or a 64bit OS?
Because if it's 32bit it will only read 3.5 gigs of memory.

 

[glnz]

32-bit. Understand about the limit. But have 2GB now (2 x 1GB) and thinking about going to the max. Who's a good discounter? (By the way, the Dell site says that Dell is offering "Dell branded" RAM chips for my PC but they are not necessarily the same maker although they should be compatible.)

 

[Whyfly??]

Hmm I would just find some RAM on Newegg.
Just make it sure it's the same speed, same format, and that it's DDR2 and just buy it from there.

 

[glnz]

Dear Why: Thanks for your fast response. A google search for my actual part number shows that Memory Ten has my exact RAM part number in stock, @ $25.98 each. Are they reputable?