Xeon E5645 vs Core 2 Duo P8400 | Hardlimit Benchmark Central

Xeon E5645 vs Core 2 Duo P8400

Both Xeon E5645 and Core 2 Duo P8400 monothread performance are pretty similar although their multithread performance are quite different. These two models were released just two years apart which could explain their performance similarity in monothread performance.

Comparison

Specs

Xeon E5645

Core 2 Duo P8400

Base frequency
2400 MHz
2267 MHz
Boost frequency
2800 MHz
-
Half load boost frequency
2553 MHz
-
Socket
LGA 1366
Socket P
Cores
6
2
Threads
-
2
TDP
80 W
25 W
L1 cache
64 kb
2x32 kb
L2 cache
256 kb
3072 kb
L3 cache
12288 kb
-
Proccess
0,032 um
0,045 um
Core
Westmere-EP
Peryn-3M
Architecture
-
Core
Release date
3/2010
7/2008

Monothread performance

Mode 0 [FPU]
11450
10484 [-9.21%]
Mode I [SSE3]
17019
N/A

Multithread performance

Mode 0 [FPU]
53541
19216 [-178.63%]
Mode I [SSE3]
81600
N/A

Stats

Perf per MHz Mode 0
4.09
4.62 [+12.96%]
Perf per MHz Mode I
6.08
N/A
Perf per watt Mode 0
669.26
768.64 [+14.85%]
Perf per watt Mode I
1020
N/A

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