Original Link: https://www.anandtech.com/show/18

ABIT TX5/TX5N

by Anand Lal Shimpi on August 21, 1997 2:17 PM EST


With the success of their original two TX motherboards the AX5 and the PX5, ABIT decided to improve on their current record by adding two more accomplishments to their ever expanding list, they titled the two the TX5 and TX5N. The ABIT TX5N is essentially a TX5, however it gives the user the un-ABIT like power of configuring their CPU without the use of ABIT's SoftMenu technology!


Motherboard Specifications

Socket Style: Socket 7
Chipset: i82430TX
Cache: 512KB
Form Factor: AT (w/ AT & ATX PS Connectors)
BUS Speeds: 50 / 55 / 60 / 66 / 68 / 75 / 83 MHz
Clock Multipliers: 1.5x / 2.0x / 2.5x / 3.0x / 3.5x / 4.0x / 4.5x
Voltages Supported: 2.5 / 2.7 / 2.8 / 2.9 / 3.2 / 3.38 / 3.5
RAM Slots: 4 72pin SIMM Slots (EDO/FPM)
2 168pin DIMM Slots (EDO/FPM/SDRAM)
PCI/ISA Slots: 4 PCI Slots
3 ISA Slots (1 Shared / 2 Full Length)
BIOS: AWARD PnP BIOS
PCI EIDE Controller: Super I/O
2 EIDE Channels
1 FDD Channel
2 Serial /1 EPP

The Good

It seems like the world as a whole is going through this fad of living, feeling and being "healthy". We see it on TV everyday, we hear it on the radio, and finally we are beginning to see it in our computers! It was bound to happen, we all experience health problems at some time in our lives, and mimicking their users, so do our computers. Eventually the inevitable happened, our motherboards began performing more functions than they were originally designed to do, the "healthy PC" was born. Big names in the industry like ASUS quickly jumped on the healthy PC bandwagon by including features such as voltage monitoring, thermal status indicators and other such features with their already excellent motherboards. In order to keep up their competitive nature, ABIT hopped on the train with their latest incarnations, the TX5 and TX5N.

The TX5N's sales pitch doesn't start out by stating that its a jumperless motherboard, simply because, well, it isn't! For once, ABIT has given the user the option of choosing to go with all the quality, reliability and performance of an ABIT motherboard with or without a side order of the SoftMenu jumperless configuration. However ABIT simply couldn't make the setup and ease of use of the TX5N a pain, that's just not their "style". In order to make the initial configuration of the TX5N as easy as possible ABIT chose to use two sets of DIP switches (8-individual switches in each set) which are much easier to configure on the fly than individual Jumpers scattered all over the place. The manual, classic of all newer ABIT boards, is truly a force to be reckoned with when competing against the TX5N. The excellent and beautifully designed manual is perfect for those building a PC for the first time, and even if you're a novice you'll find that the written documentation of any ABIT board is well above average. The manual includes such features as System Block Diagrams, Layout Diagrams, as well as a small tutorial on how to install the motherboard. All of these are components which can be found in most motherboard manuals, however ABIT takes their explanations to a new level of detail and accuracy. Ever get confused with which pin you have to plug in first when connected LED indicators? If so then ABIT's manual is your long lost friend =)

The layout of the TX5N is more than decent, for an AT motherboard that is. The footprint of the board is noticeably larger than that of the PX5 therefore making it a better fit for most cases, including ATX cases, support which is made possible by the ATX power connector located on the motherboard in addition to the standard AT connector. Unlike the PX5, the TX5N features a full set of 4 SIMM slots and 2 DIMM slots while keeping the 4 PCI and 3 ISA slots free from most obstructions. Around the three voltage regulators which are located parallel to the Socket-7 IC are 14 mid-sized capacitors which are most of the 16 total located on the board which explain its awesome stability. Without raising the core voltage from 2.8~2.9v the TX5N allowed me to overclock the Pentium MMX 233 all the way up to 290.5MHz without a problem and without raising the core voltage from 3.2~3.3v it allowed me to take the AMD K6 233 up to 250 without a hitch, something which can be quite tricky to do on most motherboards.

The performance of the TX5N is comparable to that of its big brother, the AX5, in all aspects the TX5N is a very stable motherboard and quite fast. It produced some of the absolute highest overclocked Winstone scores ever seen on this site. And unlike the AX5, I didn't experience any problems AT ALL running the system at the 83MHz bus speed with any SDRAM I threw at it, regardless of the BIOS timings.

The Bad

The TX5N isn't a problematic motherboard, in fact the only flaw I could find was the fact that it is only available in an AT form factor. I wonder if ABIT will make another ATX successor to the AX5...The TX5 on the other hand suffers from an instability problem at the 83.3MHz bus speed setting, other than that it is identical to the TX5N except it features the jumperless SoftMenu CPU setup that made ABIT famous, unfortunately you sacrifice stability at the 83.3MHz bus speed as a result of that.



IRQ Usage

  • Auto-detects PnP Cards after HDD Detection

 


BIOS Settings

Here are my Recommended BIOS Settings for those of you who have been having problems with the TX5N/TX5 and higher bus speeds. Below are my recommended settings for bus speeds < 66MHz, 75MHz, and 83.3MHz. If you are using Non-EDO RAM, then use the settings the in the 2nd (Non - EDO) column, if you are using EDO RAM with a 50/60/66MHz bus speed use the 3rd (66MHz Setting) column. If you are using EDO RAM with a 75/83.3MHz bus speed use the 4th (75/83MHz Setting) column. Finally, if you are looking for the safest and most stable setting, use the last column.

TX5N Chipset Features Setup
Item Non - EDO 66MHz Setting 75/83MHz Setting Safe Setting
Auto Configuration: Disabled Disabled Disabled Enabled
DRAM Leadoff Timing: 11/7/3 10/6/3 10/6/4 11/7/3
DRAM Read Burst (EDO/FPM): x222/x333 x222/x333 x222/x333 x444/x444
DRAM Write Burst Timing: x222 x222 x222 x333
Fast EDO Lead Off: Disabled Enabled Enabled Disabled
Refresh RAS# Assertion: 4 Clks 4 Clks 4 Clks 5 Clks
Fast RAS to CAS Delay: 3 2 3 3
DRAM Page Idle Timer: 2 Clks 2 Clks 2 Clks 4 Clks
DRAM Enhanced Paging: Enabled Enabled Enabled Enabled
Fast MA to RAS# Delay: 2 Clks 2 Clks 2 Clks 2 Clks
SDRAM(CAS Lat/RAS-to-CAS): 3/3 2/2 3/3 3/3
SDRAM Speculative Read: Disabled Enabled Disabled Disabled
System BIOS Cacheable: Disabled Disabled Disabled Disabled
Video BIOS Cacheable: Enabled Enabled Enabled Enabled
8 Bit I/O Recovery Time: 2 2 2 3
16 Bit I/O Recovery Time: 3 3 3 4
Memory Hole At 15M-16M: Disabled Disabled Disabled Disabled
PCI 2.1 Compliance: Enabled Enabled Enabled Disabled

 

 


Recommended SDRAM

This little addition to my review layout was put in here just so you all can have an idea of what brand of SDRAM I recommend and have tested with the board, just to avoid problems in the future if you decide to purchase the board.

Recommended SDRAM: Advanced Megatrends SDRAM; Corsair SDRAM
SDRAM Tested: 2 x 32MB Advanced Megatrends SDRAM DIMMs; 2 x 32MB Corsair SDRAM DIMMs

Manufacturer: Advanced Megatrends
Purchase Web-Site: http://www.megacom.com

Manufacturer: Corsair Microsystems
Purchase Web-Site: http://www.nf-ny.com/



The Test

In recent times, choosing a motherboard cannot be completely determined by a Winstone score. Now, many boards come within one Winstone point of each other and therefore the need to benchmark boards against each other falls. Therefore you shouldn't base your decision entirely on the benchmarks you see here, but also on the technical features and advantages of this particular board, seeing as that will probably make the greatest difference in your overall experience.

Test Configuration

Processor(s): AMD K6/233 ANR & Intel Pentium MMX 233 & Cyrix 6x86MX-PR2/200
Board Revision: 1.01
RAM: 2 - 32MB Advanced Megatrends SDRAM 2 - 32MB Corsair SDRAM
Hard Drive(s): Western Digital Caviar AC21600H
Video Card: Matrox Millennium (2MB WRAM)
Busmaster EIDE Drivers: Intel v3.01
Video Card Drivers: MGA Millennium 4.03.00.3410
OS: Windows 95 Service Release 2
System Cooling: InWin G500 Mid Tower AT Case
1" Heatsink/Fan Combo
3" Secondary Case Fan

 

Windows 95 Performance of the ABIT TX5N

CPU Business Winstone97 Business Graphics Winmark97
AMD K6/200 54.5 100
AMD K6/208 57.1 108
AMD K6/225 55.8 106
AMD K6/233 55.3 106
AMD K6/250 59.9 120
Cyrix 6x86MX-PR2/166 (150/75) 54.7 111
Cyrix 6x86MX-PR2/200 (166/66) 55.7 104
Intel Pentium MMX 200 51.6 103
Intel Pentium MMX 208 53.8 110
Intel Pentium MMX 225 53.4 107
Intel Pentium MMX 233 53.4 107
Intel Pentium MMX 262.5 57.6 124
Intel Pentium MMX 290.5 59.2 133

Here you can see some astonishing scores, once again provided by ABIT the current holders of two awards on Anand's Hardware Tech Page. With the AMD K6 at 250MHz, a setting not too incredibly easy to accomplish on most boards yet a piece of cake on the TX5N, the test system achieved a score of 59.9 which is extremely close to that of most more expensive Pentium II systems! Using the Pentium MMX at 290.5MHz the test system achieved a score quite close to that of the K6 in the Business Winstone test however the most amazing score by the Pentium MMX was the 133 it achieved in the Business Graphics Winmark test!

 


The Final Decision

If you're looking for a TX based motherboard and absolutely require an AT form factor give the ABIT TX5N or TX5 a try, depending on what type of user you are you may want to go with the Jumperless configuration or the TX5 over the DIP-Switch controlled TX5N.

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