3.2GHz Quad-Core Intel HD Graphics
Running all of the tested processors at 3.2GHz with just quad-core (four cores exposed, no HT on any CPU) and no Turbo Boost so that all of the CPUs are runnining in a like manner to just try to compare the pure graphics performance. Benchmarking by Michael Larabel for a future article on Phoronix.com looking at Ivy Bridge HD 2500 graphics.


Intel HD 2500: 

	Processor: Intel Core i5-3470 @ 3.20GHz (4 Cores), Motherboard: ECS Z77H2-A2X v1.0, Chipset: Intel Xeon E3-1200 v2/3rd, Memory: 8192MB, Disk: 240GB OCZ VERTEX3, Graphics: Intel Xeon E3-1200 v2/3rd Gen Core, Audio: Realtek ALC892, Monitor: DELL P2210H, Network: Realtek RTL8111/8168B + Intel Centrino Advanced-N 6205

	OS: Ubuntu 12.10, Kernel: 3.5.0-8-generic (x86_64), Desktop: Unity 2D 6.0.0, Display Server: X Server 1.12.1.902 (1.12.2 RC 2), Display Driver: intel 2.20.3, OpenGL: 2.1 Mesa 8.1-devel (git-7d65356), Compiler: GCC 4.7 + LLVM 3.1 + Intel IOC SDK 2012 v1.0.2, File-System: ext4, Screen Resolution: 1920x1080

Intel HD 4000: 

	Processor: Intel Core i7-3770K @ 3.50GHz (4 Cores), Motherboard: ECS Z77H2-A2X v1.0, Chipset: Intel Xeon E3-1200 v2/3rd, Memory: 8192MB, Disk: 240GB OCZ VERTEX3, Graphics: Intel Xeon E3-1200 v2/3rd Gen Core, Audio: Realtek ALC892, Monitor: DELL P2210H, Network: Realtek RTL8111/8168B + Intel Centrino Advanced-N 6205

	OS: Ubuntu 12.10, Kernel: 3.5.0-8-generic (x86_64), Desktop: Unity 2D 6.0.0, Display Server: X Server 1.12.1.902 (1.12.2 RC 2), Display Driver: intel 2.20.3, OpenGL: 2.1 Mesa 8.1-devel (git-7d65356), Compiler: GCC 4.7 + LLVM 3.1 + Intel IOC SDK 2012 v1.0.2, File-System: ext4, Screen Resolution: 1920x1080

Intel HD 3000: 

	Processor: Intel Core i5-2500K @ 3.30GHz (4 Cores), Motherboard: ECS Z77H2-A2X v1.0, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 8192MB, Disk: 240GB OCZ VERTEX3, Graphics: Intel 2nd Generation Core Family IGP, Audio: Realtek ALC892, Monitor: DELL P2210H, Network: Realtek RTL8111/8168B + Intel Centrino Advanced-N 6205

	OS: Ubuntu 12.10, Kernel: 3.5.0-8-generic (x86_64), Desktop: Unity 2D 6.0.0, Display Server: X Server 1.12.1.902 (1.12.2 RC 2), Display Driver: intel 2.20.3, OpenGL: 2.1 Mesa 8.1-devel (git-7d65356), Compiler: GCC 4.7 + LLVM 3.1 + Intel IOC SDK 2012 v1.0.2, File-System: ext4, Screen Resolution: 1920x1080


Doom 3 1.3.1
Resolution: 1920 x 1080 - Quality: Low
Frames Per Second > Higher Is Better
Intel HD 2500 . 23.10 |==================================
Intel HD 4000 . 38.07 |========================================================
Intel HD 3000 . 24.60 |====================================


Lightsmark 2008
Resolution: 1920 x 1080
Frames Per Second > Higher Is Better
Intel HD 2500 . 40.48 |=============================
Intel HD 4000 . 78.46 |========================================================
Intel HD 3000 . 41.11 |=============================


OpenArena 0.8.8
Resolution: 1920 x 1080
Frames Per Second > Higher Is Better
Intel HD 2500 . 28.10 |==================================================
Intel HD 4000 . 31.40 |========================================================
Intel HD 3000 . 28.00 |==================================================


Prey 1.4.119
Resolution: 1920 x 1080
Frames Per Second > Higher Is Better
Intel HD 2500 . 19.00 |===================================
Intel HD 4000 . 30.33 |========================================================
Intel HD 3000 . 21.90 |========================================


Warsow 1.0
Resolution: 1920 x 1080
Frames Per Second > Higher Is Better
Intel HD 2500 . 27.60 |===================================
Intel HD 4000 . 44.20 |========================================================
Intel HD 3000 . 29.33 |=====================================


Xonotic 0.6
Resolution: 1920 x 1080 - Effects Quality: Low
Frames Per Second > Higher Is Better
Intel HD 2500 . 106.46 |==============================================
Intel HD 4000 . 127.00 |=======================================================
Intel HD 3000 . 107.27 |==============================================


Xonotic 0.6
Resolution: 1920 x 1080 - Effects Quality: High
Frames Per Second > Higher Is Better
Intel HD 2500 . 40.00 |====================================
Intel HD 4000 . 61.92 |========================================================
Intel HD 3000 . 43.36 |=======================================