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Xeon E5645


Description
The Xeon E5645 is a cpu manufactured by Intel that was released on March 2010. This model has 6 Westmere-EP cores , runs at 2400 MHz as base frequency and has a a thermal design power of 80 W.

The E5645 has 64 kB of cache L1, 256 kB of cache L2 and 12288 kB of cache L3.

Specs
Official name
Intel(R) Xeon(R) CPU E5645 @ 2.40GHz
CPUID
206c2
Core
Westmere-EP
Architecture
Base frecuency
2.4 GHz
Boost frecuency
2.8 GHz
Socket
LGA 1366
Cores/Threads
6 /6
TDP
80 W
Cache L1 (d+i)
64 kB
Cache L2
256 kB
Cache L3
12288 kB
Release date
March 2010

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
Multithread
Test#1 (Integers)
1779
9666 (x5.4)
Test#2 (FP)
3910
22915 (x5.9)
Test#3 (Generic, ZIP)
2524
14311 (x5.7)
Test#1 (Memory)
2422
3808 (x1.6)
TOTAL
10636
50701 (x4.8)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
Multithread
Test#1 (Integers)
6472
34434 (x5.3)
Test#2 (FP)
4404
24230 (x5.5)
Test#3 (Generic, ZIP)
2428
14479 (x6.0)
Test#1 (Memory)
2333
3812 (x1.6)
TOTAL
15636
76955 (x4.9)

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [% vs time]

grafica bm.hardlimit.com


Test#2 (FP) [% vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [% vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [% vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [% vs time]

grafica bm.hardlimit.coma


Test#2 (FP) [% vs time]

grafica bm.hardlimit.coma


Test#3 (Generic, ZIP) [% vs time]

grafica bm.hardlimit.coma


Test#1 (Memory) [% vs time]

grafica bm.hardlimit.coma

Similar CPUs to Xeon E5645
Intel Xeon E5645 (This model)
 Mode FPU monothread  [10636 points]
 Mode FPU multithread  [50701 points]
 Mode SSE monothread  [15636 points]
 Mode SSE multithread  [76955 points]
 Mode FPU monothread  [10647 points +0.10%]
 Mode FPU multithread  [35493 points -29.99%]
 Mode SSE monothread  [15738 points +0.65%]
 Mode SSE multithread  [55657 points -27.68%]
 Mode FPU monothread  [11371 points +6.91%]
 Mode FPU multithread  [42106 points -16.95%]
 Mode SSE monothread  [17580 points +12.43%]
 Mode SSE multithread  [69393 points -9.83%]
 Mode FPU monothread  [12968 points +21.93%]
 Mode FPU multithread  [49538 points -2.29%]
 Mode SSE monothread  [19187 points +22.71%]
 Mode SSE multithread  [75425 points -1.99%]
 Mode FPU monothread  [9252 points -13.01%]
 Mode FPU multithread  [14315 points -71.77%]
 Mode SSE monothread  [14774 points -5.51%]
 Mode SSE multithread  [30825 points -59.94%]
 Mode FPU monothread  [12636 points +18.81%]
 Mode FPU multithread  [58113 points +14.62%]
 Mode SSE monothread  [16769 points +7.24%]
 Mode SSE multithread  [80186 points +4.20%]
 Mode FPU monothread  [15388 points +44.68%]
 Mode FPU multithread  [44379 points -12.47%]
 Mode SSE monothread  [16617 points +6.28%]
 Mode SSE multithread  [48617 points -36.82%]
 Mode FPU monothread  [29686 points +179.12%]
 Mode FPU multithread  [63243 points +24.74%]
 Mode AVX2 monothread  [58553 points +274.48%]
 Mode AVX2 multithread  [126474 points +64.35%]
 Mode FPU monothread  [18206 points +71.18%]
 Mode FPU multithread  [39235 points -22.61%]
 Mode AVX2 monothread  [35134 points +124.70%]
 Mode AVX2 multithread  [79145 points +2.85%]
 Mode FPU monothread  [24484 points +130.20%]
 Mode FPU multithread  [43947 points -13.32%]
 Mode AVX2 monothread  [39727 points +154.07%]
 Mode AVX2 multithread  [79224 points +2.95%]
 Mode FPU monothread  [13917 points +30.85%]
 Mode FPU multithread  [47093 points -7.12%]
 Mode SSE monothread  [20242 points +29.46%]
 Mode SSE multithread  [73215 points -4.86%]
          
FPU mode comparison

Monothread integers operations
Modelo
Puntuación
Intel Xeon E5645
1779
This model
1745 [-1.90%]

Multithread integers operations
Modelo
Puntuación
11658 [20.61%]
Intel Xeon E5645
9666
This model
9063 [-6.24%]
8747 [-9.51%]
8236 [-14.80%]
8097 [-16.23%]

Monothread floating point operations
Modelo
Puntuación
3951 [1.04%]
Intel Xeon E5645
3910
This model
3797 [-2.91%]
3162 [-19.13%]
3030 [-22.52%]

Multithread floating point operations
Modelo
Puntuación
24153 [5.40%]
23090 [0.76%]
Intel Xeon E5645
22915
This model
21734 [-5.16%]
21629 [-5.61%]
21484 [-6.25%]
20018 [-12.64%]
19797 [-13.61%]

Monothread generic test (Zip compression)
Modelo
Puntuación
Intel Xeon E5645
2524
This model
2441 [-3.30%]

Multithread generic test (Zip compression)
Modelo
Puntuación
15398 [7.60%]
Intel Xeon E5645
14311
This model
13429 [-6.16%]
12689 [-11.33%]
12376 [-13.52%]

Monothread memory performance
Modelo
Puntuación
2656 [9.63%]
Intel Xeon E5645
2422
This model
2123 [-12.35%]

Multithread memory performance
Modelo
Puntuación
Intel Xeon E5645
3808
This model
3755 [-1.40%]
3630 [-4.69%]
          
SSE mode comparison

Monothread integers operations
Modelo
Puntuación
Intel Xeon E5645
6472
This model
6407 [-1.01%]
6327 [-2.24%]

Multithread integers operations
Modelo
Puntuación
42479 [23.36%]
41109 [19.38%]
41004 [19.08%]
Intel Xeon E5645
34434
This model
32503 [-5.61%]
31501 [-8.52%]
31335 [-9.00%]
30090 [-12.61%]

Monothread floating point operations
Modelo
Puntuación
4930 [11.95%]
Intel Xeon E5645
4404
This model
4275 [-2.94%]
4223 [-4.12%]

Multithread floating point operations
Modelo
Puntuación
25003 [3.19%]
24850 [2.56%]
Intel Xeon E5645
24230
This model
23794 [-1.80%]
23788 [-1.82%]
23682 [-2.26%]
23474 [-3.12%]

Monothread generic test (Zip compression)
Modelo
Puntuación
Intel Xeon E5645
2428
This model
2395 [-1.35%]
2384 [-1.78%]

Multithread generic test (Zip compression)
Modelo
Puntuación
15777 [8.97%]
Intel Xeon E5645
14479
This model
14437 [-0.30%]
13134 [-9.29%]
12850 [-11.25%]
12718 [-12.17%]
11964 [-17.37%]

Monothread memory performance
Modelo
Puntuación
2383 [2.16%]
Intel Xeon E5645
2333
This model
2237 [-4.11%]

Multithread memory performance
Modelo
Puntuación
Intel Xeon E5645
3812
This model

Hardlimit Benchmark Central - Ver. 3.7.8