Athlon64 3400+ vs 3700+

[pontifex]

i replaced my 3700+ with an opteron 175. i usually sell my old hardware to a friend of mine. he currently has a 3400+

He's not sure whether his processor is 939 or not. I don't know if the 3400+ comes in another socket or not.

Anyway, he says his 3400+ is 2.4gz
My 3700+ is 2.2 ghz

if they are both 939 chips, why is his faster or isn't it? you would think the 3700+ would be faster, right?

if anyone can explain this, i'd appreciate it.

 

[classy]

Originally posted by: pontifex
i replaced my 3700+ with an opteron 175. i usually sell my old hardware to a friend of mine. he currently has a 3400+

He's not sure whether his processor is 939 or not. I don't know if the 3400+ comes in another socket or not.

Anyway, he says his 3400+ is 2.4gz
My 3700+ is 2.2 ghz

if they are both 939 chips, why is his faster or isn't it? you would think the 3700+ would be faster, right?

if anyone can explain this, i'd appreciate it.

The 3400+ is a 754 pin chip which are not dual channel. The 3700+ is 939 chip which has dual channel memory support. In most things I would say the 3400+ will be faster. They are different socket chips.

 

[pontifex]

Originally posted by: classy

Originally posted by: pontifex
i replaced my 3700+ with an opteron 175. i usually sell my old hardware to a friend of mine. he currently has a 3400+

He's not sure whether his processor is 939 or not. I don't know if the 3400+ comes in another socket or not.

Anyway, he says his 3400+ is 2.4gz
My 3700+ is 2.2 ghz

if they are both 939 chips, why is his faster or isn't it? you would think the 3700+ would be faster, right?

if anyone can explain this, i'd appreciate it.

The 3400+ is a 754 pin chip which are not dual channel. The 3700+ is 939 chip which has dual channel memory support. In most things I would say the 3400+ will be faster. They are different socket chips.

newegg has a 939 3400+
so its not entirely 754

 

[pontifex]

anyone else have any input?

 

[cubeless]

all other things being the same, a couple hundred mhz isn't going to make a big change in seat of the pants performance...

didn't do any research, but there is a difference in the perf designation within the chip family due to the combinations of cache and core speed... i.e. a 4000 is a 1mb cache 2.4ghz chip and a 3800 is a 2.4ghz 512 mb cache chip...

 

[classy]

Run cpu z on his machine or just find out what board he is using. If its a 3400+ and its at 2.4g its a 754 chip. I never said they didn't make 3400+ 939 chips either, but if its 2.4g part its more than likely a 754. So your 3700+ will be incompatible with his board, they are different sockets.

 

[classy]

And as for which is faster there are two things that seperate these chips. The 3400 runs at 2.4g with 512mb cache and single channel memory support. The 3700+ runs at 2.2 with 1mb cache and it has dual channel support. The larger L2 cache and dual channel memory support gives the 3700+ its higher rating. But the clock speed would give the 3400+ an edge in a few apps.

 

[Zap]

As has been stated, a 3400+ that is 2.4GHz is socket 754, while the socket 939 3400+ is 2.2GHz. The 3700+ paired with dual channel RAM configuration would definately be faster, but that "faster" may be only a measurable amount. In other words, in normal day to day computing tasks the two would probably "feel" the same to the person sitting at the computer. A couple of differences though - most socket 754 3400+ chips are older ones such as Newcastle core. If this is true for the OP's friend, and if his friend wants to overclock, then I'd say that the 3700+ San Diego would be much better in that respect since besides double the cache, dual channel and SSE3 over the other chip, the San Diego can usually be clocked to at least the same MHz if not higher than a Newcastle.

Of course the chip won't work on the other motherboard so the cost of a different board will be incurred. Also, if the guy does not have dual channel capable RAM, then that's one aspect that he would not gain unless he gets new RAM as well.