Westmere-EP vs i7-980X

iClique.com

macrumors member
Original poster
Jul 6, 2010
36
0
So why the Westmere-EP vs. The i7-980X?

It looks as though the Westmere-EP is pretty much identical to the i7-980X so why use the Westmere in the Mac Pro vs the i7?

http://ark.intel.com/Compare.aspx?ids=47917,47932,

Name
1. Intel® Xeon® Processor W3680 (12M Cache, 3.33 GHz, 6.40 GT/s Intel® QPI)
2. Intel® Core™ i7-980X Processor Extreme Edition (12M Cache, 3.33 GHz, 6.40 GT/s Intel® QPI)

Code Name
1. Westmere-EP
2. Gulftown

Status Launched Launched
Launch Date Q1'10 Q1'10
Processor Number W3680 i7-980X
# of Cores 6 6
# of Threads 12 12
Clock Speed 3.33 GHz 3.33 GHz
Max Turbo Frequency 3.6 GHz 3.6 GHz
Cache 12 MB Intel® Smart Cache 12 MB Intel® Smart Cache
Bus/Core Ratio 25 25
Bus Type QPI QPI
System Bus 6.4 GT/s 6.4 GT/s
# of QPI Links 1 1
Instruction Set 64-bit 64-bit
Instruction Set Extensions SSE4.2 SSE4.2
Embedded Options Available No No
Supplemental SKU No No
Lithography 32 nm 32 nm
Max TDP 130 W 130 W
VID Voltage Range 0.800V-1.375V 0.800V-1.375V
1ku Bulk Budgetary Price $999.00 $999.00
Memory Specifications
Max Memory Size
(dependent on memory type) 24 GB 24 GB
Memory Types DDR3-800/1066/1333 DDR3-1066
# of Memory Channels 3 3
Max Memory Bandwidth 32 GB/s 25.6 GB/s
Physical Address Extensions 36-bit 36-bit
ECC Memory Supported Yes No
Graphics Specifications
Integrated Graphics No No
Package Specifications
Max CPU Configuration 1 1
TCASE 67.9°C 67.9°C
Package Size 42.5mm X 45mm 42.5mm X 45.0mm
Lithography 32 nm 32 nm
Sockets Supported FCLGA1366 FCLGA1366
Advanced Technologies
Intel® Turbo Boost Technology Yes Yes
Intel® Hyper-Threading Technology Yes Yes
Intel® Virtualization Technology (VT-x) Yes Yes
Intel® Trusted Execution Technology Yes No,
AES New Instructions Yes Yes
Intel® 64 Yes Yes
Idle States Yes Yes
Enhanced Intel® Speedstep Technology Yes Yes
Intel® Demand Based Switching Yes No
Thermal Monitoring Technologies No No
 

Hellhammer

Moderator emeritus
Dec 10, 2008
22,164
581
Finland
X5680 is not even used in Mac Pro. It's W3680 what is used in 6-core Mac Pro. It costs 999$ in 1k lots, the same as 980X costs.
 

iClique.com

macrumors member
Original poster
Jul 6, 2010
36
0
X5680 is not even used in Mac Pro. It's W3680 what is used in 6-core Mac Pro. It costs 999$ in 1k lots, the same as 980X costs.
I edited it to reflect the correct chip... Is there any major benefit to using the Westmere vs the i7? Is it because the iMacs are using the i7?
 
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