Once the memory was installed, the SPD programming of the memory is correct and reflects the two possible settings. It also featurs EPP, so that you may let the BIOS set the correct speed and timing for you.
Testing the memory is done by a specific method. First we run the kits at the intended settings - in this case 2.3V and 1066 MHz with CL5-5-5-15. This worked flawlessly. Then the timings were set at 3-2-2 with 667 MHz. The memory did not boot at these settings. When relaxing the timings a bit to 3-3-3, the system became stable once more at 1.95V. This is where the smile on my face became bigger and bigger after each test run. The first milestone is 800 MHz at CL3-3-3, the second came in form of 1000 MHz CL4-4-4 and then even 1066 MHz at the same setting with 2.35V. The kit even manages 1066 MHz CL5-5-5-15 with default timings of 1.85V. The maximum this kit managed was 1170 MHz stable at 5-5-5-15 and 2.35V. Cellshocks warranty only coveres an operation up to 2.3V, but even at 2.45V and CL5-5-5-15, the memory did not manage 1200 MHz.
Cellshock 1066 MHz CL5 2GB Kit
CPU Clock & Memory Ratio
Memory Speed
Memory Timings
Everest Read
Everest Write
Everest Latency
Quake 3 Timedemo
3DMark 2001SE
SuperPi Mod 1M
7 x 320 3:5
533 MHz
5-5-5-15 1.85V
8064 MB/s
5814 MB/s
57.7 ns
439.8 fps
27799
24.01 s
7 x 324 3:5
540 MHz
5-5-5-15 2.15V
8365 MB/s
6041 MB/s
55.2 ns
456.5 fps
28392
23.07 s
7 x 351 3:5
585 MHz
5-5-5-15 2.35V
8752 MB/s
6391 MB/s
53.4 ns
478.5 fps
29179
21.96 s
7 x 294 2:3
442 MHz
4-4-4-12 1.85V
7262 MB/s
5373 MB/s
65.6 ns
404.8 fps
26373
26.15 s
7 x 333 2:3
500 MHz
4-4-4-12 2.15V
8207 MB/s
6070 MB/s
58.1 ns
453.9 fps
28450
23.11 s
7 x 355 2:3
533 MHz
4-4-4-8 2.35V
8768 MB/s
6461 MB/s
54.7 ns
471.6 fps
29238
21.64 s
7 x 277 4:5
347 MHz
3-3-3-10 1.95V
6341 MB/s
5059 MB/s
78.6 ns
374.2 fps
24638
28.43 s
7 x 320 4:5
400 MHz
3-3-3-10 2.25V
7328 MB/s
5793 MB/s
68.3 ns
427.7 fps
26681
24.68 s
7 x 336 4:5
421 MHz
3-3-3-10 2.35V
7623 MB/s
6108 MB/s
64.8 ns
439.8 fps
27064
23.50 s
As you can see in the Voltage graph, it becomes apparent, that the maximum memory is rises steadily with the increase of voltage. Then when the maximum is reached, simply change the CL setting and continue at lowest voltage from the same point. This makes this one of the most versatile memory we have tested so far. Remember, that every kit performs differently, so your milage may vary!