K7 vs. Pentium III benchmarks

The Register has published some benchmarks which they got from an engineer who works at ACER. Personally I would not count on those numbers because: 1. the motherboard is just a sample and not a final product, and 2. The OS is Win2K Beta 3 WinHEC APR 99 release. What do you think?

Comments

It's a fake benchmark perpetrated by one AcermanPS

[Anonymous Coward]

This is a fake benchmark perpetrated by a guy who called himself AcermanPS. He lurks around at a Thai webboard called www.pantip.com at tech-exchange section.

He claimed to be working for Acer in Singapore but his IP address comes from Kasetsart University in Bangkok, Thailand.

He is the same guy who, a few months ago, claimed that he can overclock Celeron 300A to 600 MHz using only a fan. When pressed, for details, he defaulted with no proof whatsoever.

Looks like FUD

[six]

Yep ... I don't trust theese numbers for some obvious reasons ...

Ok, so a K7 is slower at WinStone than a P3 at the same frequency ?? This would be VERY SURPRISING given that even the K6-III WS scores are significantly higher than a P3 at same clock speed. This would mean that the K7 is outperformed by a K6-III and I just can't belive this.

Let's compare the CPUs die sizes also :

K6-III : 91 sqmm
Pee!!! : about 120 sqmm
K7 : about 185 sqmm

K6-III 91 sqmm includes 64Kb L1 and 256Kb L2, K7 just have 128Kb L1 on die ...

So, if you got my point, the K7 is more than double the silicon size of the K6, so what do you think they put in ... Delay loops ??

Another strange thing is that the K7 system uses and AMD chipset and DRDRAM. ALI is one of the supposed K7 chipset manufacturers ... For people who don't know, ALI stands for Acer Labs Inc. so why the hell an Acer engineer is not using an ALI based test system ??! Moreover, the AMD Irongate chipset is not supposed (but don't quote me on this) to support DRDRAM.

The FPU numbers are quite funny too ... I read some K7 FPU tech docs (well, the few that are available), and there's absolutely no way that the K7 performs worse than a P3. K7 has 3 fully pipelined FP units, P3 has 2 semi-pipelined units, and P3 has more latency on FMUL, FDIV, etc ...

I won't trust any benchmark numbers unless they come from a reliable source, and the register, obviously, is not one (but we already knew it :)

Pretty good denouncement of this FUD

[Edd]

I found this on a messageboard, here by General Lee D. Mented, it is pretty good:

> I'm a hardware research engineer from Acer Inc. (Singapore)

Do we have any proof of this? No.

> K7 test machines CPU K7 600MHz (FSB 200MHz x 3.0) 600MHz 128KB L1 Cache
> 2-way associative 200MHz 512KB L2 Cache 4-way associative EV6 BUS
> Controller L2 Cache Speed 1/3 FSB

Everyone on this message board has mentioned this part spec dozens of times, this could easily be expected.

>RAM TI Direct RDRAM 256MB at 600MHz

I believe Intel RDRAM spec is twin concurrent 16bit busses at 800mhz, not 600mhz. This would support the claims of 3.2GB/sec and multiples thereof with interleaving. Also, Sony has speced their PSX2 as having an 800mhz RDRAM bus. Nintendo RDRAM runs at 433mhz. I don't know of anyone making 600mhz rdram because nobody apparently intends to use it. I believe this is fake.

VGA
> Matrox Millennium G400MAX 32MB SGRAM 360MHz RAMDAC Resolution 1600x1200 32
> Bpp 85Hz

The card's been announced, everyone who read the press release saw it and full specs.

> Harddisk IBM Ultra3 SCSI 6ms 10.0 GB

Nobody makes a SCSI HD in 10.0GB. They're all multiples of 2.255GB. 4.55, 9.1, 18.2, 36.4 are all currently shipping capacities. I don't believe IBM has shown a U3W prototype yet, only Quantum has that I'm aware of. Also, there is no controller listed in this spec, and I haven't yet seen any manufacturer talking about and upcoming U3W controller for anytime this year. Not believable.

> Mainboard AMD Sample Chipset
> Northbridge AMD Irongate AGP4X SouthBridge AMD Cobra ATA66 USB 2.0

Chip names but no numbers. I believe the names were on AMD presentations or discussed at comp shows or shown on roadmaps. We obviously expect AGP 4x. Intel has not even finalized the USB 2.0 spec yet, so support for this in an already existing chipset is nonsense.

> OS-Windows 2000 Beta 3 WinHEC April 99 Release

Nobody in their right mind would run benchmark comparisons on a beta OS.

> P-III test machines CPU Pentium III Coppermine 600MHz (FSB 133MHzx4.5)
> 600MHz 32KB L1 Cache 4-way associative 600MHz 256KB L2 Cache on-die 4-way
> associative

We all expect this part eventually. Nothing new in the specs for it.

> Mainboard Intel Sample Chipset Northbridge
> FW82820 AGP4X Southbridge FW82801AA ATA66 USB 2.0

Chip numbers for this can probably be easily extrapolated from current intel partnumbers. We've been hearing for weeks about delays in the "intel 820" chipset. We know it will support agp4x and ata66 (not that anyone cares about ata66). I'm very confident it will NOT support USB 2.0 as intel has announced that will be coming up for early 2000.

> WinBench99 Version 1.1 ( 5 times measure ) CPUMark99 (CPU Integer
> Performance Not include MMX register) - K7@600MHz 68.4 Mark - Pentium
> III@600MHz 70.1 Mark

This is quite likely made up. The scores on the PIII which could be considered a "known" are way off from projections from standard clocks and results from overclocked systems. Sorry, this is most likely numbers drawn out of a hat and adjusted to make the K7 look bad.

> FPUWinMark( CPU Floating Point Performance Not Include
> MMX,SSE,3DNow!,FSTORE Extendtion register ) - K7@600MHz 2,819 Mark -
> Pentium III@600MHz 3,104 Mark

Again, probably random numbers.

Now I have to ask, how many people on here would not know where to find the press releases, product roadmaps, and rumored info to construct this kind of sham? The accuracy of the description is the only thing that makes it believable to any of us. The more you actually know about this upcoming hardware, the easier it is to fake, because you can get the audience's confidence with known facts and then slip the lies in at the end.

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