Thanks for the links reply! Now we can get down to business...
Since you won't pay top dollar for a CPU - neither would I - let's take out the top dollar CPUs from the benchmarks you linked - the 840EE and the X2 4800+. I think we both agree that the performance isn't worth the price that you pay for those chips. All the prices I list will be from Newegg for continuity/simplicity. The Intel 840D, Model# BX80551PG3200FN, costs $542.99 and the AMD X2 4200+ Model# ADA4200BVBOX is $555. I would say that those are pretty comparable prices. As you stated in your previous posts, when you are comparing chips, you should compare in the same price range.
Scenario #1: 4200+ is 16.9% faster than the 840D.
Scenario #2: 840D is 19.7% faster than the 4200+. This particular benchmark is odd in that the 840D beats out the 840EE and the 4800+...
Scenario #3: The 4200+ is 10% faster than the 840D.
Scenario #4: The 4200+ is 47.7% faster than the 840D.
Scenario #5: 4200+ is faster than the 840D....
We'll leave single cores out of the picture. They aren't what you're going to purchase and are not made for the multi-tasking performance you want/need.
Apples to Apples, the AMD 4200+ beat the performance of the 840D in a all of the scenarios except Scenario #2.
AMD's closest competitior to the 820D is the 3800+ at ~$354. It is really competing with the 830D in price range. You can read the results of the 830D/3800+ comparison as easily as I can at Anandtech. The 3800+ won 30/31 benchmarks. Here's what Anandtech said:
Is the Athlon 64 X2 3800+ worthy of its Pentium D opponent? Not to spoil the surprise, but yes, emphatically yes.
Not only are there significant advantages in single threaded games, but everything from encoding to the multitasking tests put the Athlon 64 X2 3800+ ahead of its Pentium D counterpart.
The Intel 820D is $245.99. AMD does not have a chip in this price range: the 820D is ~$100 less than the 3800+. It would be interesting to see % performance increase you get for that $100. Both chips should OC extremely well for a decent OCer. Power consumption on the 820D - even with the newer/cooler Prescott cores - will be higher than comparable AMD CPUs. It would logically follow that the 3800+ would get a higher OC on stock cooling than the 820D. I don't know this for fact so we'll assume that they will get comparable OCs on stock cooling. Soooo, the only real differences between the systems from a price perspective would be: RAM, mobo and processor. (A decent OCer would get a really good PSU with either Intel or AMD.) What would be your choices for RAM and mobo on the Intel 820D system? For the AMD 3800+ system?
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