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OsX86 Hackintosh (Intel / AMD) / Re: Tiger only supported Sata1 (1.5gb/s) disk speeds and works best with ICH7R
« Last post by chrisNova777 on April 06, 2026, 06:38:34 PM »Quote
ok so your saying ICH7 was the gold standard but it only ever supported SATA 150 transfer speeds?
Gemini said
This is a classic "gotcha" in the retro-computing world. You've hit on the exact reason why the ICH7 is simultaneously loved and hated.
The Short Answer:
Yes, the base ICH7 was limited to SATA 150 (1.5Gbps) in many real-world Mac implementations, but the chipset itself is a bit more complicated.
1. The Confusion: Desktop vs. Mobile
Desktop ICH7 (82801GB): Technically supports SATA II (3Gbps) speeds. However, it does not support AHCI. Because it lacks AHCI, it often defaults to IDE/Legacy mode, which can bottleneck your performance depending on the drivers you use.
Mobile ICH7-M (82801GBM): This is the "Gold Standard" I mentioned for compatibility, because it was in every 2006-era Mac (MacBook, Mac mini, iMac). But here is the catch: Apple (and Intel) limited the mobile version to SATA 150 (1.5Gbps) to save power and maintain stability with early SATA drives.
2. The AHCI Problem
This is where the "R" matters:
ICH7 (Base): No native AHCI support. You are stuck in "Legacy IDE" mode. Even if the hardware can technically push more data, the lack of AHCI means you lose NCQ (Native Command Queuing), which makes SSDs feel much slower.
ICH7R / ICH7-M / ICH7-DH: These variants do support AHCI.
3. Why it feels like the "Gold Standard" anyway
Even though the base ICH7 is often capped at 1.5Gbps, Hackintoshers call it the gold standard because it is the most compatible.
In the "Ultimate Tiger" era, stability was more important than raw speed.
A drive running at a stable 1.5Gbps (SATA I) is better than a drive on an ICH8R running at 3Gbps (SATA II) that kernel panics every 20 minutes because the AHCI drivers are flaky.
How to get SATA II (3Gbps) on your project:
Since you specifically want SATA II speeds for your boot drive on Tiger/Leopard/Snow Leopard:
Don't use the base ICH7: If your board has the base ICH7, you will likely be capped at 1.5Gbps or forced into IDE mode.
Use the ICH8R (with the 10.6 Backport): As we discussed, if you use the 10.6 drivers in 10.5.8, you "unlock" the 3Gbps speed and AHCI support that the base ICH7 lacks.
The SiI3132 is still the winner: A Silicon Image 3132 card is a SATA II (3Gbps) card. It bypasses all the Intel chipset limitations and gives you the full speed across all three OS versions natively.
Summary
If you use the onboard ICH7, you are choosing compatibility over speed (often stuck at 150MB/s).
If you use a PCIe SATA card (SiI3132) or a patched ICH8R, you are choosing speed (300MB/s), but you have to do the "kext legwork" we talked about.
Is your current "Ultimate Tiger" board using the base ICH7, or are you looking at an ICH8/G41 board specifically to get that 3Gbps jump?
You said
ICH7R / ICH7-M / ICH7-DH: ok show me some motheboards that feature these exaft chipsets that might be cheaply purchased on ebay
Gemini said
Finding a motherboard with the ICH7R or ICH7-DH (Digital Home) is the smartest move for your "Ultimate Tiger" project because these specific variants support AHCI, which the base ICH7 lacks.
Since these were premium chipsets in 2006, they are usually found on high-end LGA 775 boards. On eBay, you can often find these "orphan" boards or CPU/Motherboard combos for $30–$60.
1. The "Digital Home" Choice (ICH7-DH)
The ICH7-DH was the heart of Intel’s "Viiv" platform. These boards are fantastic for Hackintoshing because they were designed for media center PCs and almost always have AHCI enabled.
Intel D945GTP / D945GCFG1: These are classic Intel-branded desktop boards. They are extremely "plain" but very stable. The D945GCFG1 was often found in Gateway or Dell enthusiast desktops of that era.
ASUS P5W DH Deluxe: This is a legendary board in the retro community. It uses the i975X chipset paired with the ICH7-DH. It’s highly sought after because it has built-in Wi-Fi and excellent overclocking for Core 2 Duos.
Gigabyte GA-8I945P-G-RH: A solid mid-range board that features the ICH7-DH. Gigabyte boards from this era are famous for having very "Hackintosh-friendly" BIOS options.
2. The "Enthusiast" Choice (ICH7R)
The ICH7R was the workstation/RAID version. These boards often feature more SATA ports (usually 4–6) and better power delivery for quad-core CPUs.
ASUS P5B Series: While the standard P5B uses the ICH8, the ASUS P5B Deluxe and P5B-E often use the ICH8R or high-end ICH7R variants.
Abit AW9D-MAX: If you find this at a flea market or a cheap "Buy It Now" on eBay, grab it. It’s one of the most beautiful boards ever made (blue LEDs, heat pipes) and uses the i975X + ICH7R combo.
Intel D975XBX / D975XBX2 ("Bad Axe"): These were Intel's flagship workstation boards. They are rock-solid and feature the ICH7R. They were the "workhorse" boards used by many early developers in the Hackintosh scene.
3. The "Workstation" Choice (ICH7-M)
Technically a laptop chip, the ICH7-M (Mobile) actually appeared on some rare "MoDT" (Mobile on Desktop) motherboards. These are rare but "magical" because they are 100% native to the Mac drivers.
AOpen i975Xa-YDG: A very rare board that allowed you to put a laptop Core Duo / Core 2 Duo into a desktop. It uses the ICH7-M and is essentially a Mac mini in a desktop form factor.
Summary Shopping List for eBay:
Search for these models or keywords to find the best deals:
"Intel D975XBX" (Great for ICH7R stability)
"ASUS P5W DH" (The best for ICH7-DH features)
"LGA 775 i945P" (Broad search—look at the photos for "ICH7R" printed on the chip or board)
"Dell Dimension 9100 / 9150 Motherboard" (Often uses the ICH7R and can be found for under $25 as a replacement part).
One Critical Warning: If you buy a Dell or HP "OEM" board from eBay, make sure it comes with the proprietary front panel adapter or that you are comfortable re-wiring the power button pins, as they don't use standard headers!
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