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Core 2 Quad Q8400


Description
The Core 2 Quad Q8400 is a cpu manufactured by Intel that was released on April 2009. This model has 4 Yorkfield cores , runs at 2666 MHz as base frequency and has a a thermal design power of 95 W.

The Q8400 has 128+128 kB of cache L1, 4096 kB of cache L2 and 0 kB of cache L3.

Specs
Official name
Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66GHz
CPUID
1067a
Core
Yorkfield
Architecture
Base frecuency
2.666 GHz
Boost frecuency
2.666 GHz
Socket
LGA 775
Cores/Threads
4/4
TDP
95 W
Cache L1 (d+i)
128+128 kB
Cache L2
4096 kB
Cache L3
0 kB
Release date
April 2009

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)
2441
9712 (x4.0)
Test#2 (FP)
6239
24808 (x4.0)
Test#3 (Generic, ZIP)
2620
10507 (x4.0)
Test#1 (Memory)
1427
2028 (x1.4)
TOTAL
12727
47054 (x3.7)

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)
3085
12248 (x4.0)
Test#2 (FP)
6800
26838 (x3.9)
Test#3 (Generic, ZIP)
2733
10818 (x4.0)
Test#1 (Memory)
1417
2017 (x1.4)
TOTAL
14035
51921 (x3.7)

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 Core 2 Quad Q8400
Intel Core 2 Quad Q8400 (This model)
 Mode FPU monothread  [12727 points]
 Mode FPU multithread  [47054 points]
 Mode SSE monothread  [14035 points]
 Mode SSE multithread  [51921 points]
 Mode FPU monothread  [12746 points +0.15%]
 Mode FPU multithread  [24197 points -48.58%]
 Mode SSE monothread  [14006 points -0.21%]
 Mode SSE multithread  [26779 points -48.42%]
 Mode SSE monothread  [15624 points +11.32%]
 Mode SSE multithread  [51639 points -0.54%]
 Mode FPU monothread  [12235 points -3.87%]
 Mode FPU multithread  [22762 points -51.63%]
 Mode SSE monothread  [13463 points -4.08%]
 Mode SSE multithread  [25215 points -51.44%]
 Mode FPU monothread  [15388 points +20.91%]
 Mode FPU multithread  [44379 points -5.69%]
 Mode SSE monothread  [16617 points +18.40%]
 Mode SSE multithread  [48617 points -6.36%]
 Mode FPU monothread  [16422 points +29.03%]
 Mode FPU multithread  [48962 points +4.05%]
 Mode SSE monothread  [17289 points +23.18%]
 Mode SSE multithread  [48980 points -5.66%]
 Mode FPU monothread  [16266 points +27.81%]
 Mode FPU multithread  [23251 points -50.59%]
 Mode SSE monothread  [16694 points +18.94%]
 Mode SSE multithread  [26836 points -48.31%]
 Mode FPU monothread  [11371 points -10.65%]
 Mode FPU multithread  [42106 points -10.52%]
 Mode SSE monothread  [17072 points +21.64%]
 Mode SSE multithread  [63756 points +22.79%]
 Mode FPU monothread  [10636 points -16.43%]
 Mode FPU multithread  [50701 points +7.75%]
 Mode SSE monothread  [15636 points +11.41%]
 Mode SSE multithread  [76955 points +48.22%]
 Mode FPU monothread  [11885 points -6.62%]
 Mode FPU multithread  [22031 points -53.18%]
 Mode SSE monothread  [13081 points -6.80%]
 Mode SSE multithread  [24888 points -52.07%]
 Mode FPU monothread  [11656 points -8.41%]
 Mode FPU multithread  [22160 points -52.90%]
 Mode SSE monothread  [12937 points -7.83%]
 Mode SSE multithread  [24597 points -52.63%]

Monothread integers test mode FPU comp.
Modelo
Puntuación
Intel Core 2 Quad Q8400
2441
This model

Multithread integers test mode FPU comp.
Modelo
Puntuación
11761 [21.10%]
11658 [20.04%]
Intel Core 2 Quad Q8400
9712
This model
9666 [-0.47%]
9063 [-6.68%]
8747 [-9.93%]
8236 [-15.20%]

Monothread FP test mode FPU comp.
Modelo
Puntuación
Intel Core 2 Quad Q8400
6239
This model
5850 [-6.25%]

Multithread FP test mode FPU comp.
Modelo
Puntuación
25545 [2.97%]
Intel Core 2 Quad Q8400
24808
This model
24153 [-2.64%]
23090 [-6.93%]
23042 [-7.12%]
22915 [-7.63%]
21734 [-12.39%]

Monothread Zip test mode FPU comp.
Modelo
Puntuación
Intel Core 2 Quad Q8400
2620
This model
2524 [-3.65%]

Multithread Zip test mode FPU comp.
Modelo
Puntuación
11480 [9.27%]
Intel Core 2 Quad Q8400
10507
This model
10252 [-2.43%]
9698 [-7.70%]

Monothread mem. test mode FPU comp.
Modelo
Puntuación
Intel Core 2 Quad Q8400
1427
This model

Multithread mem. test mode FPU comp.
Modelo
Puntuación
2529 [24.69%]
Intel Core 2 Quad Q8400
2028
This model
1740 [-14.21%]

Monothread integers test mode SSE comp.
Modelo
Puntuación
3095 [0.32%]
Intel Core 2 Quad Q8400
3085
This model
2883 [-6.54%]

Multithread integers test mode SSE comp.
Modelo
Puntuación
13207 [7.82%]
12397 [1.21%]
Intel Core 2 Quad Q8400
12248
This model
11953 [-2.41%]
11249 [-8.16%]
11189 [-8.65%]
10403 [-15.07%]

Monothread FP test mode SSE comp.
Modelo
Puntuación
6862 [0.91%]
Intel Core 2 Quad Q8400
6800
This model
6356 [-6.54%]

Multithread FP test mode SSE comp.
Modelo
Puntuación
28167 [4.95%]
27266 [1.59%]
Intel Core 2 Quad Q8400
26838
This model
25440 [-5.21%]
25003 [-6.84%]
24850 [-7.41%]
24230 [-9.72%]

Monothread Zip test mode SSE comp.
Modelo
Puntuación
Intel Core 2 Quad Q8400
2733
This model
2658 [-2.76%]
2589 [-5.28%]

Multithread Zip test mode SSE comp.
Modelo
Puntuación
11964 [10.60%]
Intel Core 2 Quad Q8400
10818
This model
10409 [-3.78%]
10149 [-6.18%]
10037 [-7.22%]
9991 [-7.65%]

Monothread mem. test mode SSE comp.
Modelo
Puntuación
Intel Core 2 Quad Q8400
1417
This model
1272 [-10.24%]
1251 [-11.75%]

Multithread mem. test mode SSE comp.
Modelo
Puntuación
2391 [18.56%]
Intel Core 2 Quad Q8400
2017
This model
1868 [-7.35%]

Hardlimit Benchmark Central - Ver. 3.7.3