Zeus: Difference between revisions

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| partnumber  = X817793<br>X810478
| partnumber  = X817793<br>X810478
| introduced  = Late 2008
| introduced  = Late 2008
| designedby  = ATi<br>Microsoft<br>NEC (eDRAM)
| designedby  = Microsoft
| codename    = Gunga
| codename    = Y3
| type        = [[GPU]]
| type        = [[GPU]]
| usedin      = [[Jasper]]
| usedin      = [[Jasper]]
| clockspeed  = 500MHz
| clockspeed  = 500MHz
| memory      = 10MB [[eDRAM]]
| memory      = 10MB [[eDRAM]]
| process      = 65nm (GPU die)<br>80nm (eDRAM die)
| process      = 65nm (GPU die)<br>90nm (eDRAM die)
| package      = Flip-chip BGA1017
| package      = Flip-chip BGA1017
| predecessor  = [[Rhea]]
| predecessor  = [[Rhea]]<br>[[Elpis (GPU)|Elpis]]
| successor    = [[Kronos]]
| successor    = [[Kronos]]
}}
}}


'''Zeus''', also known as '''Y3''',  codename '''Gunga''', is a 65nm [[GPU]] used in the [[Xbox 360]]. It is the successor to [[Rhea]] and initially used the '''C22''' core. The revised version used to the '''C23''' core. The 65nm process shrink required a partial redesign of the chip. The [[eDRAM]] was not shrunk and remains on a 80nm process. Zeus was the first version of Xenos where all variants are known to be reliable.  
'''Zeus''', codename '''Y3''', is a 65nm [[GPU]] and is used on the [[Jasper]] motherboard. It is the successor to [[Rhea]]. The 65nm process shrink required a redesign of the chip. The [[eDRAM]] was unchanged. Zeus was the first version of the [[GPU]] where all variants are known to be reliable. The 65nm redesign was done by Microsoft themselves, not ATi.


== Specifications ==
== Specifications ==
=== GPU ===
=== GPU (Gunga) ===
{{GPU Specs}}
{{GPU Specs}}
* C22 [[stepping]] (X817793)
* C23 [[stepping]] (X810478)
* 65nm process
* 65nm process


=== eDRAM ===
=== eDRAM (Styx-90) ===
{{EDRAM Specs}}
{{EDRAM Specs}}
* 80nm process
* FS21 [[stepping]]
* 90nm process


== Details ==
== Details ==
All variants of Zeus use the [[Gunga]] [[GPU]] and [[Styx-90]] [[eDRAM]]


=== X817793 ===
=== X817793 ===
The initial version of GPU Zeus using the C22 design. The ballout is compatible with the previous 80nm GPUs, however minor changes to the motherboard must be made.
The initial version of GPU Zeus with C22 [[stepping]]. The ballout is compatible with the previous 90nm GPUs, however minor changes to the motherboard must be made.


* Part Number: X817793
* Part Number: X817793
* Foundry: {{Foundry|f=taiwan}}


=== X810478 ===
=== X810478 ===
A revised version of GPU Zeus using the C23 design. The specifics of what changed between the two designs is not known. This chip is a drop-in replacement for the earlier [[#X817793|X817793]] version of Zeus.
A revised version of GPU Zeus with C23 [[stepping]]. The specifics of what changed between the two cores is not known. This chip is a drop-in replacement for the earlier version of Zeus.


* Part Number: X810478
* Part Number: X810478
* Foundries:
 
** {{Foundry|f=korea}}
== Prototypes ==
** {{Foundry|f=taiwan}}
Engineering Samples by [[stepping]].
 
=== C11 ===
First version.
 
[[File:X812419-001.jpg|150px]]
 
* Part Number: X812419-001
 
=== C12 ===
Minor update. Marked as C12P.
 
[[File:X813271-002.jpg|150px]]
 
[[File:X813899-001.jpg|150px]]
 
* Part Numbers:
** X813271-002
** X813899-001
 
=== C21 ===
Major update.
 
[[File:X815990-001.jpg|150px]]
 
[[File:X815992-001.jpg|150px]]
 
* Part Numbers:
** X815990-001
** X815992-001
 
=== C22 ===
Minor update. Engineering sample for the final C22 production chip.
 
[[File:X815988-002.jpg|150px]]
 
[[File:X815989-002.jpg|150px]]
 
[[File:X817124-001.jpg|150px]]
 
[[File:X818063-001.jpg|150px]]
 
* Part Numbers:
** X815988-002
** X815989-002
** X817124-001
** X818063-001
 
=== C23 ===
Minor update. Engineering sample for the final C23 production chip.
 
[[File:X819831-001.jpg|150px]]
 
* Part Number: X819831-001


{{Motherboard Components}}
{{Motherboard Components}}
[[Category:Motherboard Components]]
[[Category:Motherboard Components]]

Latest revision as of 23:29, 23 August 2024

Zeus
X817793-001.jpg
Original Zeus (X817793)
X810478-002.jpg
Revised Zeus (X810478)
Part NumberX817793
X810478
IntroducedLate 2008
Designed ByMicrosoft
CodenameY3
TypeGPU
Used InJasper
Clock Speed500MHz
Memory10MB eDRAM
Process65nm (GPU die)
90nm (eDRAM die)
PackageFlip-chip BGA1017
PredecessorRhea
Elpis
SuccessorKronos

Zeus, codename Y3, is a 65nm GPU and is used on the Jasper motherboard. It is the successor to Rhea. The 65nm process shrink required a redesign of the chip. The eDRAM was unchanged. Zeus was the first version of the GPU where all variants are known to be reliable. The 65nm redesign was done by Microsoft themselves, not ATi.

Specifications

GPU (Gunga)

  • 500Mhz clock speed
  • 48 floating-point vector processors divided into 3 dynamically scheduled SIMD groups (16 each)
  • Unified shader architecture
  • 16 texture addressing units
  • 16 texture filtering units
  • 8 pixel rendering pipelines
  • Direct access to CPU L2 cache
  • C22 stepping (X817793)
  • C23 stepping (X810478)
  • 65nm process

eDRAM (Styx-90)

  • 10MB 256GB/s eDRAM
  • Contains logic for:
    • 4-sample anti-aliasing
    • Alpha compositing
    • Color
    • Z/stencil buffering
  • FS21 stepping
  • 90nm process

Details

All variants of Zeus use the Gunga GPU and Styx-90 eDRAM

X817793

The initial version of GPU Zeus with C22 stepping. The ballout is compatible with the previous 90nm GPUs, however minor changes to the motherboard must be made.

  • Part Number: X817793

X810478

A revised version of GPU Zeus with C23 stepping. The specifics of what changed between the two cores is not known. This chip is a drop-in replacement for the earlier version of Zeus.

  • Part Number: X810478

Prototypes

Engineering Samples by stepping.

C11

First version.

X812419-001.jpg

  • Part Number: X812419-001

C12

Minor update. Marked as C12P.

X813271-002.jpg

X813899-001.jpg

  • Part Numbers:
    • X813271-002
    • X813899-001

C21

Major update.

X815990-001.jpg

X815992-001.jpg

  • Part Numbers:
    • X815990-001
    • X815992-001

C22

Minor update. Engineering sample for the final C22 production chip.

X815988-002.jpg

X815989-002.jpg

X817124-001.jpg

X818063-001.jpg

  • Part Numbers:
    • X815988-002
    • X815989-002
    • X817124-001
    • X818063-001

C23

Minor update. Engineering sample for the final C23 production chip.

X819831-001.jpg

  • Part Number: X819831-001
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