dual core processors.....please help???

[xirokx]

1. AMD Athlon 64 X2 Dual Core 3800+ (Socket 939) - OEM (CP-152-AM)
Price: £164.95

2. AMD Athlon 64 X2 Dual Core 3800+ (Socket 939) - Retail (ADA3800BVBOX) (CP-134-AM)
Price: £175.95

Whats the difference between no.1 and no.2 they seem the same to me?

3. AMD Athlon 64 X2 Dual Core 4400+ (Socket 939) - Retail (ADA4400CDBOX) (CP-127-AM)

Only AMD64 technology runs today’s 32-bit and tomorrow’s 64-bit software
- AMD’s Enhanced Virus Protection for Microsoft ® Windows ® XP SP2*
- Cool'n'Quiet™ technology for a quieter computer and lower power costs
- HyperTransport™ technology and an integrated DDR memory controller for maximum performance and system efficiency
- 2.2GHz operating speed
- 1MB L2 cache

Is it true the diff between amd athlon 64 x2 dual core 3800 n 4400 are as follows:

4400 has 1.5mb extra L2 cache? Is L1 cache better than L2 or the other way round?
4400 has slightly faster operating speed at 2.2ghz as opposed to 2.0ghz that of 3800?
And processes 600mhz or ghz faster?

If you overclocked both logically speaking 4400 would out perform the 3800 is that right?
However if you overclocked the 3800 what would it be equivilant to? a 4200 perhaps? I am a n00b in the world of overclocking so just wondered?

Pound for Pound how much better is the 4400 than the 3800?

On a seperate note is it true u can over clock the x2 4200? if yes once overclocked what would it equivilant to ?

Thanks for your help most appreciated

 

[xirokx]

retail xomes with a heatsink and a 3 year warrenty

Is the heatsink any good or would I need something better?

4400 has 1.5mb extra L2 cache? Is L1 cache better than L2 or the other way round?

Would the x2 4200 out perform the x2 3800 when overclocked?

Thanks for all your help so far

 

[xirokx]

Is L1 cache better than L2 or the other way round?

so the x2 3800 is just as good as the x2 4200 when overclocked? or even if not both were not overclocked?

 

[xirokx]

would I notice the 10% when playing heavy duty games?

Bottom line is would you get a 3800 or 4200 dual core??