Googer
Lifer
- Nov 11, 2004
- 12,571
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Originally posted by: Zebo
This deal is cold. Need $250 mobo and expensive registed/ECC ram and 4 sticks to work proper with full bandwidth!!!
You're cheaper, faster, more feature filled buying a 3800 x2 for $325, 2 x 512 PC3200 value ram and a $65 Asrock mobo!
But these processors are not intended for home use, just like machine guns are not intended for Deer Hunting. Apples to Oranges.
Originally posted by: Zebo
Originally posted by: Googer
Here is what I am talking about. Dual socket Opteron's have twice the memory bandwith of Single socket chips.
Dual Socket = 12.4 GB/s
Single Socket = 6.2 GB/s
Quad-socket = 24.8 GB/s
Octo-socket = 49.6 GB/s!
http://www.lostcircuits.com/motherboard/asus_k8n-dl/8.shtml
Personaly I would take a Pair of 2.4GHz Single Core Opterons over one Dual Core 2.4 Ghz processor simply because it has twice the memory bandwith. Also it is a cheap way to get 4gb with out having to run at a 2t command rate. The last time I checked Crucial.com Registered ECC was only $5-10 more than non ECC unbufferd 512MB DIMM(s).
http://www.lostcircuits.com/motherboard/asus_k8n-dl/wb5_wme.gif
http://www.lostcircuits.com/motherboard/asus_k8n-dl/wb5_rox.gif
http://www.lostcircuits.com/motherboard/asus_k8n-dl/wb5_zip.gif
Googer do yourself a favor before assuming double bandwidth out performs a crossbar X2 has and look here. http://techreport.com/reviews/2005q2/athlon64-x2/index.x?pg=8
4200 beats dual 248's all day long. Both are same speed AND 4200 has half the cache half the bandwidth.
As always latency with AMD-64 is king. An opteron 2xx setup has sh1tty latency. Relying on HT to communicate between cores and slower memory interface while X2 uses crossbar (same speed as processor) to communicate between cores and even the cheapest non-ECC memory is faster w/o extra wait state.
Just remember that most old Opterons used the 800 MHz Hypertransport link and new ones use 1000MHz. I am only standing behind the statement that two single core Opterons are faster than one dual core Opteron because it is the word of AMD, it is their claim and no one has the benchmarks to disprove that claim yet.