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Originally Posted by Arqentus
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Now, how advanced is a psp compared to lets say the x50v...
Cpu+Gpu: 620mhz & 2700g vs Twin 2-bit MIPS R4000 microprocessors 333mhz
Memory: 64mb + 16mb vram vs 32mb shared ram
Screen: 3.7" vs 4.3"
Resolution: 640*320 vs 480*272
etc ... Now based on the specs & expected published power of the twin cpu of the psp, and based on the specs of the 2700g, i feel that even psp emulated game's will be able to play on a x50v. Hell, even ps1 game's can be run only on a 400mhz cpu with no gpu at all ...
Some food for discussion :)
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You're leaving a ton of stuff out. Quite frankly, based on the rumored specs of the PSP, it will simply blow the X50V out of the water for gaming.
Here's some of the reasons:
1. The PSP's main CPU will supposedly have a 2.6 GFlop/s vector floating point unit. The PXA270 cannot do floating point at all, and will be destroyed by games that make use of such operations. This is a LOT of processing horsepower.
2. The PSP's "media engine" (the second R4000 MIPs processor I think) contains 2 megabytes of 2.6 GB/sec embedded DRAM. It might even be larger, this was an early spec and I think I've read that it will be over 8 megabytes. Anyway, 2.6 gigabytes/sec is WAY faster than the PXA270 can access its external memory. Access to such an incredibly fast and relatively large buffer of memory will give it significant advantages on resource-intensive games. In contrast, a 624 MHz PXA270 can only access its 256 kbytes of on-chip SRAM at comparable speeds. Once you go off chip, you're stuck at < 400 mbytes/sec, a 6X slowdown that will bring the PXA270 to its knees on many intensive games.
3. The PSP is rumored to have TWO graphics accelerator chips, each performing different functions. I can't say for sure, but my guess is that they're equal to, or better than, what the 2700G provides.
4. The PSP has a dedicated 166 MHz DSP just for sound processing!
5. The PSP may have less total memory, but remember that games actually don't need all that much memory. They tend to use huge amounts of memory in PC games, but this is not representative of memory requirements in console games. Remember that the playstation 2 only has 32 megabytes of total system RAM.
6. Finally, and this is a big one... Games for the PSP use 1.8 gigabyte UMD (universal media device) disks. This is a CRAPLOAD of data, and will allow games for the PSP to be extremely media rich. Try that putting that much data on a PPC without carrying around a pocket full of $100 CF cards...
The bottom line is that people are predicting that the PSP will be even more powerful than the playstation 2 in several ways.