G.Skill F2-6400CL4D-2GBPK 2GB Kit (2x1024MB) PC2-6400/DDR2-800 Memory Review


The introduction ...

G.Skill has launched the new F2-6400CL4D-2GBPK 2048MB DDR2-800 memory kit,
which already represents a nice eye-catcher with the packing.
Because the two 1GB memory modules with the azure heat spreader are delivered in a wooden box and
are thus optimally protected against possible damage.
But let us see if a complex packing help us to get higher overclocking results ...



Thanks for the support ...

Many thanks for the support with the F2-6400CL4D-2GBPK 2GB PC2-6400/DDR2-800 CL4 kit by G.Skill

Click Here

The 2 GB kit contains 2x 1024 MB 240-pin DIMM DDR2-800 memory modules and the current price is ~ 290 euro (12/2006).
They're of course also available at our sponsors.



The supply of the two 1024MB PC2-6400 memory modules ...

That's really an original packing for memory modules, it would be a shame to throw it away:



That is contained in the scope of delivery ...

After opening the wooden box we'll see the two modules, which are bedded well in the foam material:



The technical data ...

Manufacturer G.Skill
Article number F2-6400CL4D-2GBPK
Memory 2GB kit (1024MBx2)
Package 240-pin DIMM
Type DDR2 PC2-6400
Configuration 128Meg x 64
Error correction NON-ECC
Speed DDR2 800 (400 MHz * 2)
Voltage 2.0-2.1 Volt (label with 1.9-2.0 Volt)
Memory timing 4-4-4-12 (Tcl-Trcd-Tras-Trp)



Characteristics and other features ...

The memory modules are provided with azure passive heatsinks (heat spreader), which are supposed to enhance the
memory cooling also with higher frequencies and/or higher voltages.
Thus one achieves on the one hand better results with overclocking and on the other hand a longer life-time,
whereby G.Skill by the way grants lifelong warranty (Lifetime Warranty) for the buyer
(all informations to manufacturer conditions are of course without guarantee by ocinside.de).

Here's another picture of the nice G.Skill modules ...



Benchmark values and test results ...

Let us begin with the most important part of the test report, because the optics and packing is of course rather
secondary and the possible stable performance is the most important factor.
The test results are based on an ASRock AM2XLI eSATA2 SLI motherboard with an Athlon 64 Socket AM2 3000+
CPU on different frequencies depending on the reference clock for the different memory benchmarks.
Thus the multiplier adjustment remains on 9x with all frequencies, because an adjustment for the CPU in half multiplier
steps would be too inaccurate to get nearly the same CPU frequency for all tests.

Microsoft Windows XP Professional SP2 is used as operating system.
The stability was examined with the software Memtest86 and SiSoft Sandra Lite 2007.SP1 program is used for all
benchmarks, since it offers extensive adjustments and a fast result comparison.

First the maximum possible frequency of the memory module was determined.
The memory frequency was increased in small steps with a fixed memory timing of 4-4-4-10 2T and default memory voltage, as long as the detailed memory test with Memtest86 runs without any errors.
This quite long testing time ensured that this frequency works really stable with these modules.

The highest possible frequency with 4-4-4-10 (Tcl Trcd Tras Trp) timings was stable with 416 MHz.

With increased voltages or lower timings it's possible to run clearly higher frequencies, because the frequency values
and timings depends directly from each other.

This highest possible frequency was compared to two adjustments.
On the one hand 416 MHz with SPD values (these are given by the manufacturer in the SPD IC),
and on the other hand 200 MHz (x2) with SPD values.

By the way, the "Memory Bus Range" is no benchmark value, but this value is quite simple to calculate by the
frequency and is useful for the benchmark comparison.


Here're the benchmark results:

RAM Range Int Buff'd iSSE2
Memory bus range
416 MHz
fest (4-4-4-10 2T)
5830 MB/s
13312 MB/s
416 MHz
SPD (5-5-5-15 2T)
5781 MB/s
13312 MB/s
200 MHz
SPD (4-3-3-9 2T)
4649 MB/s
6432 MB/s


Here's a diagram of the benchmark values:


Here is a direct benchmark result comparison of some DDR2 and DDR memory modules:


The result of the G.Skill PC2-6400 CL4 memory is thereby recognizably below the Crucial memory modules tested before,
which reached with same timings 451 MHz (PC2-5300 CL3) and 443 MHz (PC2-6400 CL4).
So the modules are thus an optical eye-catcher, but the possible overclocking results with default voltages couldn't convince.


Result and general impression ...

The G.Skill 2GB PC2-6400 CL4 Kit (F2-6400CL4D-2GBPK) is delivered in a fancy packing, which surely finds some enthusiasts.
SPD timings can be used even with higher frequencies, however this 2 GB kit is only slightly overclockable and
unfortunately couldn't convince in this discipline.
Nevertheless, these modules are still favorable to upgrade a PC or Mac without too high overclocking or with higher voltages.



Read on in the hardware test area with several hardware reviews ...


All pictures and article copyright 2006 www.ocinside.de