FIRST LOOK: SiS 755FX for Socket 939 Athlon 64
by Wesley Fink on December 16, 2004 12:05 AM EST- Posted in
- Motherboards
Test Setup
| Performance Test Configuration | |
| Processor(s): | AMD Athlon 64 4000+ (2.4GHz) Socket 939 |
| RAM: | 2 x 512MB OCZ PC3200 Platinum Rev. 2 |
| Hard Drive(s): | Seagate 120GB 7200 RPM IDE (8MB Buffer) |
| Video AGP & IDE Bus Master Drivers: | SiS 1.17e VIA 4in1 Hyperion 4.51 (12-02-2003) nVidia nForce 6.11 Beta (nForce4) nVidia nForce Platform Driver 4.24 (nForce3 Ultra) |
| Video Card(s): | nVidia 6800 Ultra (AGP 8X) nVidia 6800 Ultra (PCI Express) |
| Video Drivers: | nVidia nForce 61.77 (SiS, VIA, nF3U, Intel 925X) nVidia nForce 61.81 Beta (nForce4) |
| Operating System(s): | Windows XP Professional SP1 |
| Motherboards: | Winfast 755FXK8AA (SiS 755FX) Soltek K8TPro-939 (VIA K8T800 PRO) Epox 9NDA3+ (nForce3 Ultra) nVidia nForce4 Ultra Reference Board Abit AV8 PRO (VIA K8T800 PRO) ECS KV2 Extreme (VIA K8T800 PRO) Gigabyte K8NSNXP-939 (nVidia nForce3 Ultra) MSI K8N Neo2 (nVidia nForce3 Ultra) MSI K8T Neo2 (VIA K8T800 PRO) |
Tests used OCZ PC3200 Platinum Rev. 2, which uses Samsung TCCD chips. All memory ran at 2-2-2-10 timing in all benchmarks.
Since the nVidia 6800 Ultra AGP was used for testing in the 939 chipset, we used the 6800 Ultra AGP for benchmarking the Winfast. The PCI Express 6800 Ultra was used for all testing with the nForce4 and the Reference Intel 925X. Resolution in all benchmarks is 1024x768x32 unless noted otherwise.
Results for the SiS 755FX based Winfast are color-coded red in all graphs. VIA K8T800 Pro based motherboards are displayed in green in our results, and nVidia nForce4/nForce3 are in orange. Intel results are included for Reference only and are blue in the graphs. The color coding should allow easy comparison of the tested Winfast 755FXK8AA to other chipsets and processors.
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ChineseDemocracyGNR - Tuesday, December 28, 2004 - link
The SiS755FX adds 1000MHz HTT support. So it's a chipset for socket 939 processors.The SiS756 is a new chipset, supporting PCI-E graphics.
RAINFIRE - Sunday, December 26, 2004 - link
I wasn just wondering if the SiS 756 is replacing the 755FX chipset. This seems to be the case with me. Anyone know if this is what is happening?RAINFIRE - Sunday, December 26, 2004 - link
I was just wondering if the SiS 756 chip is better/replacing the 755FX. This seems to be the case as far as I can see. Any thoughts, conments on that? I've been keeping a Next Gen Motherboard list and want to get it right.Cygni - Sunday, December 19, 2004 - link
The 755 had solid performance and i was very surprised that more board makers didnt use it. The 755FX/756 seems to be another step in that direction. Realistically, because the Nforce4 and ATI Xpress 200 are STILL not on the market, it is still possible for the 756 to be the first PCI-Ex capable AMD chipset.ChineseDemocracyGNR - Friday, December 17, 2004 - link
Yes, the board is available here:http://www.newegg.com/app/ViewProductDesc.asp?desc...
Price is $101. The Foxconn is $69, the ASRock is $77 but it has overclocking options (the Gigabyte doesn't).
Peter - Friday, December 17, 2004 - link
I've seen that ... they did actually go ahead and made it available WITH the dedicated VGA RAM? Good then. But at $30 more than the same thing in shared-RAM configuration, they've missed the price point ... I mean, $30 buys me an entire Xabre graphics card.ChineseDemocracyGNR - Friday, December 17, 2004 - link
#20, that is great news! Are you going to test the K8Upgrade-760GX (SiS760GX, mATX) or the K8Upgrade-1689 (ULI M1689, ATX)?#22, Gigabyte makes a board with dedicated memory. It does improve performance but it's considerably more expensive too (at least $30).
There's a review:
http://www.ocworkbench.com/2004/gigabyte/K8S760M/K...
Peter - Friday, December 17, 2004 - link
Wesley, I wrote this _after_ reading the article ;) Head still on shoulders.SiS integrated video for the A64 platform looks particularly interesting because it can have dedicated (!) VGA RAM attached to the north bridge chip. This is because they left the RAM controller in there - exclusively for the integrated VGA this time, since the CPU brings its own.
Now if only the board makers adopted that feature ... all I've seen so far (ASRock, ECS, PC-Chips) run it in shared-RAM mode, and so does my shiny new Averatec 5500 notebook. History repeating - even back in the Pentium and early PII days, the integrated SiS chipsets (530, 620, 630) supported dedicated VGA RAM, but practically nobody made boards that used it.
As for clock synthesizer chips, well if this piece of hardware doesn't support what you want it to do, then no update of BIOS or other software will make it.
Calin - Friday, December 17, 2004 - link
#17, I would like to have an Athlon64 board with integrated video... but not with SiS integrated video. I would wait until (hopefully) some ATI-based board appears here in Romania. (I know I might be wrong about not buying a SIS with integrated video, but I prefer not to take the chance)Calin
Wesley Fink - Thursday, December 16, 2004 - link
#17 - We have been talking with Asrock, and we will be reviewing a ASRock K8Upgrade, and the upgrade module, which is based on the SiS 760GX. We also requested a ULI chipset board but we have not received any info yet on when that board may be available for review.