ECS KN1 Extreme: Overclocking and Stress Testing

FSB Overclocking Results

Front Side Bus Overclocking Testbed
ECS KN1 Extreme
Processor: Athlon 64 4000+
(2.4GHz, 1MB Cache)
CPU Voltage: 1.55V (default 1.50V)
Cooling: Thermaltake Silent Boost K8 Heatsink/Fan
Power Supply: OCZ Power Stream 520W
Memory: OCZ PC3200 EL Platinum Rev. 2
(Samsung TCCD Memory Chips)
Hard Drive: Seagate 120GB 7200RPM SATA 8MB Cache
Maximum OC:
(Standard Ratio)
235x12 (Auto HT, 2-3-2-7, 1T, 2.85V)
2820MHz (+17.5%)
Maximum FSB:
(Lower Ratio)
235x11 (Auto HT, 2-3-2-7, 1T, 2.85V)
2585MHz (+17.5%)
Lower Ratios reset to Stock Multiplier

Reality bites when we begin overclocking the ECS KN1 Extreme, since the ratios that we had such a time finding really don't work very well. As long as we stay within about 1.5X of stock speed, the ratios work, but beyond that, the board resets whatever you set. That means that we couldn't get 10 or 9 to work with a 12X 4000+ CPU. The stock multiplier overclocking was competitive at 235 with top boards, but the inability to set ratios reliably had seriously limited bus overclocking. The best that we could do was the same 235 at 11, which we reached at stock 12X. This was really a disappointment for a board that we thought might break away as a great value. For stock performance, the ECS is fine; for modest overclocking, the ECS performs well; but for the enthusiast, the KN1 is anything but extreme.

Memory Stress Test Results:

Our memory stress test measured the ability of the ECS to operate at its officially supported memory frequency (400MHz DDR), at the lowest memory timings that OCZ PC3200 Platinum Rev. 2 modules will support. All DIMMs used for stress testing were 512MB double-sided (or double-bank) memory. To make sure that memory performed properly in Dual-Channel mode, memory was only tested using either one dual-channel (2 DIMMs) or 2 dual-channels (4 DIMMs).

Stable DDR400 Timings - One Dual-Channel
(2/4 DIMMs populated)
Clock Speed: 200MHz
CAS Latency: 2.0
RAS to CAS Delay: 2T
RAS Precharge: 7T
Precharge Delay: 2T
Command Rate: 1T

Using two DIMMs in Dual-Channel 128-bit mode, the memory performed in all benchmarks at the fastest 2-2-2-7 timings at default 2.6V voltage.

Tests with 4 DS DIMMs on an AMD Athlon 64 system are more demanding, since AMD specifies DDR333 for this combination. However, most AMD Athlon 64 motherboards combined with recent AMD processors (the memory controller is on the AMD CPU) have been able to handle 4 DIMMs at DDR400.

Stable DDR400 Timings - 4 DIMMs
(4/4 DIMMs populated)
Clock Speed: 166MHz
CAS Latency: 2.0
RAS to CAS Delay: 2T
RAS Precharge: 7T
Precharge Delay: 2T
Command Rate: 2T

Tests with all four DIMM slots populated on the ECS KN1 Extreme boards required a 2T Command Rate with 4 DS DIMMs in two dual channels at a speed of DDR333. Despite the fact that AMD recommends DDR333 with 4 DS DIMMs, most motherboards do support DDR400 at 2T with 4 DS DIMMs.

ECS KN1 Extreme: Features and Layout Epox 9NPA+ Ultra: Features and Layout
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  • vijay333 - Wednesday, July 6, 2005 - link

    oh...final system will have 4-5 HDs, standard DVD reader/writer along with (most likely) a 6800Ultra or a X800XL...
  • Xenoterranos - Wednesday, July 6, 2005 - link

    Anandtech did toy with a listening test a while back (I really don't remember much about it, other than the fact that they should have used Klipsch proMedia Ultra 5.1 speakers...)
  • vijay333 - Wednesday, July 6, 2005 - link

    Maybe I missed this info in the article somehow, but could you provide the minimum/recommended PSU wattages for the motherboards? esp the DFI and the Epox. I have a Antec 400W Smartpower PSU right now, but read a few posts on newegg that this might not be enough? Hope I don't need to upgrade this too along with the mobo, cpu and gpu...
  • vijay333 - Wednesday, July 6, 2005 - link

  • knitecrow - Wednesday, July 6, 2005 - link

    I have a comment about audio -- a topic that most sites ignore.

    Shouldn't there be a blind listening test?


    i mean cpu utilization is fairly useless. If i am listening to mp3s i care more about the quality than cpu utilization.
  • flatblastard - Wednesday, July 6, 2005 - link

    I stopped reading on page 4 upon discovering the round-up. No explanation needed...
  • Wesley Fink - Wednesday, July 6, 2005 - link

    g33k -
    The DFI was more a control to demonstrate SLI and Ultra performance were the same other than SLI video. Drivers have updated and we retested everything on the DFI as a sanity check. We ran benchmarks and not a full review, but it was hard to ignore the excellent performance.

    There is also a comment in our Final Words that the MSI Ultra board should also be considered a winner, since the SLI version was a Gold Editors Choice in the SLI roundup, and the Ultra should perform the same.
  • g33k - Tuesday, July 5, 2005 - link

    Along the same logic though, I'm curious as to why you chose to review the DFI Ultra-D when you reviewed the SLI version of this board earlier as well?.
  • g33k - Tuesday, July 5, 2005 - link

    Jeez, read Wesley's comments, he just answered why he did not review, the MSI board. It was already reviewed in the SLI roundup.

  • Wesley Fink - Tuesday, July 5, 2005 - link

    "As you can see, none of the onboard audio solutions were quite as low in CPU utilization as the Creative SoundBlaster Live! Chip, which is used on the MSI K8N Neo4 SLI Platinum tested in the nForce4 SLI roundup."

    Since this is still nF4 we included components tested on all nForce4 boards. The Ultra version of the MSI, BTW, uses the Realtek ALC850 chipset and not the Sound Blaster Live!. The SB Live! is only used on the MSI SLI.

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