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发表于 2008-12-7 11:13 · 四川
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下面是引用追伤者2008-12-07 01:09发表的:
哪里的位宽是PS3的一倍?你先看看这两机的规格再来说吧。
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昨天确实太困了,睡觉了。今天那贴居然倍锁了,OK,就发这里。PS3的我确实不知道。但360的GPU规格如下:
24 “Pipelines”
32 Texture Units
96 Arithmetic Logic Units (ALU)
192 Shader Operations per Cycle
700MHz Core
134.4 Billion Shader Operations per Second (at 700MHz)
256-bit 512MB 1.8GHz GDDR3 Memory
57.6 GB/sec Bandwidth (at 1.8GHz)
300-350 Million Transistors
90nm Manufacturing
Shader Model 3.0
ATI HyperMemory
ATI Multi Rendering Technology (AMR)
Launch: Q2 2005
Performance: Over 3x Radeon X800 XT !!! (for single R520)
16x stochastic FSAA
FP32 blending, texturing
Programmable Primitive Processor/Tesselator
www.game-eden.com
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下面是引用anderson32008-12-07 01:09发表的:
Triangle Setup
Xbox 360 - 500 Million Triangles/sec
PS3 - 250 Million Triangles/sec
Vertex Shader Processing
Xbox 360 - 6.0 Billion Vertices/sec (using all 48 Unified Pipelines)
Xbox 360 - 2.0 Billion Vertices/sec (using only 16 of the 48 Unified Pipelines)
Xbox 360 - 1.5 Billion Vertices/sec (using only 12 of the 48 Unified Pipelines)
Xbox 360 - 1.0 Billion Vertices/sec (using only 8 of the 48 Unified Pipelines)
PS3 - 1.0 Billion Vertices/sec
Filtered Texture Fetch
Xbox 360 - 8.0 Billion Texels/sec
PS3 - 12.0 Billion Texels/sec
Vertex Texture Fetch
Xbox 360 - 8.0 Billion Texels/sec
PS3 - 4.0 Billion Texels/sec
Pixel Shader Processing with 16 Filtered Texels Per Cycle (Pixel ALU x Clock)
Xbox 360 - 24.0 Billion Pixels/sec (using all 48 Unified Pipelines)
Xbox 360 - 20.0 Billion Pixels/sec (using 40 of the 48 Unified Pipelines)
Xbox 360 - 18.0 Billion Pixels/sec (using 36 of the 48 Unified Pipelines)
Xbox 360 - 16.0 Billion Pixels/sec (using 32 of the 48 Unified Pipelines)
PS3 - 16.0 Billion Pixels/sec
Pixel Shader Processing without Textures (Pixel ALU x Clock)
Xbox 360 - 24.0 Billion Pixels/sec (using all 48 Unified Pipelines)
Xbox 360 - 20.0 Billion Pixels/sec (using 40 of the 48 Unified Pipelines)
Xbox 360 - 18.0 Billion Pixels/sec (using 36 of the 48 Unified Pipelines)
Xbox 360 - 16.0 Billion Pixels/sec (using 32 of the 48 Unified Pipelines)
PS3 - 24.0 Billion Pixels/sec
Multisampled Fill Rate
Xbox 360 - 16.0 Billion Samples/sec (8 ROPS x 4 Samples x 500MHz)
PS3 - 8.0 Billion Samples/sec (8 ROPS x 2 Samples x 500MHz)
Pixel Fill Rate with 4x Multisampled Anti-Aliasing
Xbox 360 - 4.0 Billion Pixels/sec (8 ROPS x 4 Samples x 500MHz / 4)
PS3 - 2.0 Billion Pixels/sec (8 ROPS x 2 Samples x 500MHz / 4)
Pixel Fill Rate without Anti-Aliasing
Xbox 360 - 4.0 Billion Pixels/sec (8 ROPS x 500MHz)
PS3 - 4.0 Billion Pixels/sec (8 ROPS x 500MHz)
Frame Buffer Bandwidth
Xbox 360 - 256.0 GB/sec (dedicated for frame buffer rendering)
PS3 - 20.8 GB/sec (shared with other graphics data: textures and vertices)
PS3 - 10.8 GB/sec (with 10.0 GB/sec subtracted for textures and vertices)
PS3 - 8.4 GB/sec (with 12.4 GB/sec subtracted for textures and vertices)
Texture/Vertex Memory Bandwidth
Xbox 360 - 22.4 GB/sec (shared with CPU)
Xbox 360 - 14.4 GB/sec (with 8.0 GB/sec subtracted for CPU)
Xbox 360 - 12.4 GB/sec (with 10.0 GB/sec subtracted for CPU)
PS3 - 20.8 GB/sec (shared with frame buffer)
PS3 - 10.8 GB/sec (with 10.0 GB/sec subtracted for frame buffer)
PS3 - 8.4 GB/sec (with 12.4 GB/sec subtracted for frame buffer)
Shader Model
Xbox 360 - Shader Model 3.0+ / Unified Shader Architecture
PS3 - Shader Model 3.0 / Discrete Shader Architecture
Xbox 360 has the advantage in most cases.
Some PS3 GPU (RSX) specs are still not confirmed as final. It's assumed to have 24 pixel pipelines, 8 vertex pipelines, 8 ROPS (raster), and 550MHz clock speed. But any of those could change, especially the clock speed.
Are there any other GPU spec categories worth adding?
UPDATE: RSX figures were updated to represent GeForce 7 based architecture with 24 pixel pipelines, 8 vertex pipelines, 8 ROPS, 500MHz core, and 650MHz memory. In other words, it dropped from 550MHz/700MHz to 500MHz/650MHz.
https://bbs.a9vg.com/viewthread.p ... mp;uid=&page=49
http://bbs.egchina.com/viewthread.php?tid=344711 |
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