Manufacturer ASRock
Name 939SLI eSATA2
Type / Chipset Socket 939 / ULi M1697 Chipset
+++ 19 mm (40 mm radius) around the socket to the next capacitor or other parts of the
mainboard - for further information see Fit for Fan.
The overall size is 305 x 244mm.
Slots ++++ 3x pci, 3x PCI Express 1x16/1x8/1x1, 4x DDR PC2100 - PC3200 (max 4GB RAM)

+++ 1x Floppy, 2x UDMA133, 4x SATA II, 1x serial (and 1x IrDA), 1x parallel, 2x PS/2,
onboard 10/100 Mbps base-T Ethernet (Realtek RTL8201 CL),
8x USB 2.0/1.1 (4x of them internal/optional, Slot bracket not included),
1x Gameport (mounting bracket isn't delivered with the mainboard),
6-Channel AC'97 RealTek ALC660 onboard sound with 3x connectors (1x int. Aux, ext. Line out,
ext. Line in, ext. Mic, or 5.1 sound) and 2x fan connectors.

Vcore +++ BIOS between 0.80 Volt and 1.45 Volt in steps of 0.025 Volt (Vcore depends on the used CPU)
Multiplier ++++ BIOS between 4x and 25x (max multi depends on the used CPU) and 1x to 5x HT
Host Frequency ++++ BIOS between 90 and 340 MHz (PCI-E 90 - 170 MHz)
VIO/VDD ++ VCCM (VDIMM) adjustable between Low, Normal and High, Chipset adjustable to Normal/High
Performance**** ++++ Benchmark ratings with AMD Athlon 64 3000+ Venice Processor.
1x Gigabyte GV-NX66T128VP Nvidia 6600 GT PCI-E graphic card: 7922 points with 3DMark 2003
2x Gigabyte GV-NX66T128VP Nvidia 6600 GT PCI-E graphic card: 13577 points with 3DMark 2003
Manual and

++ Complete motherboard inscription and except for the often-mentioned missing BIOS section,
it's a detailed manual in different languages e.g. German, English, etc.
Small devaluation of the manual, because the BIOS is explained only in the manual on the CDROM,
which doesn't help if you are in the BIOS!
A positive feature is the additionally enclosed SATA II quick reference guide,
and the description of all pin assignments.


+++ The ASRock 939SLI-eSATA2 motherboard has a price of approx. 60 Euro (06/2006)
and is once again less expensive than previously tested PCI-E SLI motherboards.

After the previous reviewed ASRock 939SLI32-eSATA2 Motherboard I've decided to test
this 939SLI-eSATA2 motherboard as well, and anyone who like to save 10 Euro compared to the
SLI32 pendant shouldn't miss this Review.

As already mentioned in the recent PCI-E SLI (2 PCI-E graphics card slots) reviews, most of the
SLI motherboards offer just 2 PCI slots, due to the standardized ATX form factor.

ASRock managed with this 939SLI-eSATA2 to place all the 3 PCI slots, in addition to the
two PCI-E 16x slots for the video cards.
But this board offers "only" two 8x PCI-E slots for the graphics cards, where it's possible to
increase the data rate with a few jumpers to 16x if only one PCI-E slot is used.
Anyway, depending on the video cards used and the application, the performance difference of the
PCI-E 8x compared to the PCI-E 16x is nearly impossible to measure, so there's currently no reason to worry about two PCI-E 8x slots.

In addition this motherboard has a PCI-E 1x slot, a power connector for graphics cards,
and a slot for the optional AMD AM2 CPU (940-pin) riser card.
The keep-out space (about 40 mm) around the CPU socket area on the 939SLI-eSATA2 leaves
enough room for large CPU coolers.

On this picture you see the ASRock AM2 CPU slot with the protection lable and the two PCI-E slots,
where the white PCI-E slot is the PCI-E 16x slot on single operation:


Furthermore the board can be equipped with a total of 4 memory modules and is thus
upgradeable up to 4 GB memory. The allocation for the DUAL Channel memory assembly is
mentioned in the user manual and should be followed exactly.

Moreover, the board offers 2x IDE connectors for up to 4x ATA 133 hard drives,
4x SATA-II ports (RAID 0/1) and 2x eSATA-II ports for external hard drives,
which have to be installed at two of the four internal SATA-II ports.
Included with delivery is a bootable CDROM and a short guidance for the correct installation
of the Serial ATA-II ports. The manual also includes all of the information you need to manage
a new Microsoft Windows XP installation with a primary S-ATA HDD.

In addition there are 4x USB 2.0 ports at the ATX panel, 2 internal USB 2.0 plugs for 4 optional
USB ports and an onboard 10/100 LAN with WoL (Wake on Lan).
The onboard RealTek ALC-660 sound chip offers 5.1 surround sound over 3x 3.5mm connectors,
but there aren't any digital outputs.

Let us now start with the BIOS options.
By pressing the "F2" key, you get access to the AMI BIOS.
In the BIOS menu are e.g. options to change the memory frequency from 133 MHz over 166 MHz
up to 200 MHz (divider 3:2/4:3/1:1).
The host clock is adjustable from 90 MHz up to 340 MHz and the HT (hypertransport) frequency
from 1x to 5x (200/400/600/800/1000 MHz) beside extensive memory timings.
The optional synchronous or asynchronous setting of the CPU/PCI-E Bus with a fix PCI clock
of 33.33 MHz up to 37.5 MHz is a very helpful feature for good overclocking results.

The largest noticeable difference to the ASRock 939SLI32-eSATA2 pendant is the clearly
lower overclocking result, which was achieved in the test.
Because of the very high SLI32 motherboard overclocking result of approx. 300 MHz
reference clock this board reached "only" a maximum frequency of 255 MHz.
By increasing the chipset voltage this result could be surely improved, but it's difficult to get
higher results than approx. 270 MHz with this ULi based chipset (also with tuning BIOS).

The BIOS setup offers memory voltage (VCCM) and the CPU voltage (VCore) settings
and it's possible to rise the CPU voltage a bit more with the new socket 939 pinmod guide.

Most monitoring values like the CPU temperature, chipset temperature and fan rotation speeds
are shown in the BIOS, but it would be nice to also have all voltages and the useful
"CPU Overheat Shutdown" option.
According to the manual the CPU is protected against too-high temperatures, but in the current
BIOS version aren't any settings to adjust this shutdown temperature.


Result: The ASRock 939SLI-eSATA2 Socket 939 PCIe SLI Motherboard offers great equipment,
a lot of upgrade options and a very good performance!
The maximum overclocking of the chipset is clearly below the 939SLI32-eSATA2 Motherboard,
but in view of the extremely favourable price the ASRock 939SLI-eSATA2 Motherboard is
likewise very recommendable.
However, those who like to reach the highest overclocking result should invest those extra 10 Euro
for the 939SLI32-eSATA2 which includes a 1 Gigabit LAN onBoard chip.

All in all, the ASRock 939SLI-eSATA2 is an awesome Motherboard for all bargain hunters and
thanks to the very low 939 CPU prices it's surely a good alternative to the newer Socket AM2.

Special thanks to ASRock for their support.


Click to enlarge !

Click to enlarge !


**** All Socket 939 motherboard reviews since 01.11.2005 are based on an AMD Athlon 64 3000+ Venice processor,
1x (or SLI systems with 2x) Gigabyte GV-NX66T128VP nVidia 6600 GT PCI Express video cards and the
following software configuration:
Microsoft Windows XP SP2, DirectX 9.0c, Forceware 81.85 video driver and 3DMark 2003.
All benchmark results should only offer a comparison among themselves for a comparison.

Back to the AMD Athlon 64 Mainboard Review comparison !