My previous PS3 was one of slim models, i was happy to get it. All working fine, now i get Semi - BC Playstation 3. What's "new"? Is only my personal reflections, disadvantage for me can be advantage for you, etc. But i think is worth to read this. Pros: - Backward compatibility PS2 is MUCH better than using net_emu (Cech G - 25XX) I'm really surprised about backward compatibility of my PS3. My model is lack of Emotion Engine and rambus memory (CECH - A/B got it), but have Graphics Synthesizer. My luck is that i'm able to test hundreds (maybe even thousands) of titles for PS2 as i have access to library of rental place of ps2 games (sorry i'm not sure about this word, google give me - lending library, hiring establishment, rental place). Compatibility is much better. THPS4 and newer, NFS: U2 are working, Flipnic slowdowns are dissapear, and many many more. But.. PS2 emu and gx emu have some official restriction, but if we using cobra firmware then we can go around that. (eg. My PS2 Official PS2M collection is working only under cobra). Also CECH A/B/C/E are able to "true" upscale games to 720p/1080p by changing GS mode like GSM for PS2. - Overall look: 3 of first 4 models don't look like next FAT models, A/C/E have chrome trim that look amaizing. Is not the same trim like in CECH-G and later. Is true chrome color, not like in later model which have "mat" chrome instead. Also i heard (never saw, by myself) that CECH-B look amaizing with his unique black trim. Is my personal POV but first FATs look amaizing. - USB Ports, Card Reader Not much to said, just BC consoles got 4x USB ports and Multi Card Reader. For some people is nothing special, but for another one is very useful stuff. I really like card reader. I have really bad access to my PC (is behind my 32" tv), but i have external card reader in it. For me is much easier to use card to to manage my firmwares between my PC and my PS3. - Modding potential: For now i did only some cooling mods as my PS3 need thermal paste replacement under IHS. But (i didn't know that before) FAT PS3 cover (A/B/C/E for sure) is semitransparent! This mean you can easy add some led logo, temperatures lcd, and many more. Fat model are older, this mean that more probably more people tried to did something with this models. You tube is full of useful or good looking mods. - Feeling: You got one of this rare things that are not so cheap, look nice, and for people that know ps3 scene are unique. I don't know why but i feel better playing on this hardware than on slim. but this is really personal feeling. - SACD This piece of hardware can be a really important part of your audio system, Super Audio CD (SACD) is a read-only optical disc for audio storage, introduced in 1999. It was developed jointly by Sony and Philips Electronics, and intended to be the successor to their Compact disc format. While the SACD format can offer more channels (e.g. surround sound), and a longer playing time than CD. Soem people don't heard that difference. Others keep that is really important, in short. Good to have it. - xRegistry.sys This file in NAND based PS3 are stored in real chip, this mean you don't loose that after change hdd. For me is advantage but for others this can be disadvantage. Cons: - Cooling the monster: 90nm is for now very old process. Two main processing units in PS3 are manufactured in 90nm, comparing this to 65/45/40 nm in slim give you simple results. your ps3 have 2 (not measured profesional) times more TDP than current models. From cooling side this mean that earlier PS3 models need more cooling than slims. But sony didn't had too much experience in cooling systems when they released first models of PS3 (later heat sinks also showing that they don't learn too much). Worst thing is thermal paste that sony used, we can easy replace this. But they are still using same TP under Heatspreader which is not easy to change. Is not a secret that paste have same thermal ability like toothpaste (not kiding here...), and is drying after 2-3 years and need to be replaced for best cooling. So if you have 90nm components in your PS3 you see this more than on 45nm. Also airflow in fat is a sad joke from Sony side, simple internal mods give you 7-8c plus 19 blades fan and you have summary 10-12c less than on stock. Add webman and YLOD for you is only legend that you heard somewhere then. - Power consumption: More heat is more power consumption. And in this case is not a slightly different, from ps3devwiki: CECH-C model power consumption: Watts/Max 200w / 380w CECH-21XX model power consumption: Watts/Max 85w / 250w As you can see average max power usage is ~2 times more than in my current model. For me is not special problem, but electricity is not so cheap in europe. If you using console a lot then you probably will be able to see different on your bill. - Buying risk: Is not a secret than 50% (one more times is my calculation) is reflowed or after reballing. Is not a problem if you get reballed ps3, is even better. But PS3 after reflow give you max 1 year to reballing. If you want to buy BC, SEMI BC try to search thrusted source. Also part of that good 50% need to replace thermal paste, less or more (in my case less - temps ~60-63c) this also can't be done by noob in home, is risky. - NAND..: Fat BC PS3 are using NAND memory, now is have almost same safety level like NOR but in 3.55 times you can take a brick easy. for now also is small risk if developer forget about one patch then you finish with nice console shaped to PS3 style paperweight. Also NAND is slower than NOR + HDD, this also bring more risk (more time to update, mean more time to turn off your elecricity in update time). - YLOD chance: Excluding buy risk or if you don't keep your PS3 cold (~62c or under, one more time personal observation. Cooler mean better) your console have same chance to YLOD as slim. Also if you don't keep temps low then risk is much more. I improve this when i see some different in usage. Or heard your feelings.