Borderlands 2 is latest and one of the best GPU PhysX titles so far, but what system do you need to handle it efficiently ?
In following article we’ll try to gather all reliable PhysX benchmarks and tests, published on the web, to determine the GPU and CPU performance patterns of this title.
[19.09.2012] 
Borderlands 2 – GPU Test by GameGPU
One of the first articles with PhysX performance comparison, includes wide range of NVIDIA GPUs tested. At the same time, scene, choosen for benchmark, is too simplistic and does not fully represent load during actual gameplay.
[22.09.2012] 
Borderlands 2: is CPU capable of handling the PhysX effects? by PhysXInfo.com
Our attempt to compare CPU and GPU performance of PhysX effects, using single system (GTX 580 GPU and i7 2600K CPU) but multiple testing scenes, including built-in benchmark.
[27.09.2012] Borderlands 2 PhysX Performance Review by HiTechLegion
Built-in benchmark was used to compare PhysX performance (on Low, Medium and High settings) of NVIDIA GPU 6xx series.
[28.09.2012] 
Borderlands 2 im Physx-Test mit 14 Grafikkarten und 7 Prozessoren by PCGamesHardware
Massive test with 14 GPU models (both NVIDIA and AMD) and 7 CPUs variants, using integrated PhysX benchmark.
[28.09.2012] 
Borderlands 2 PhysX Test by PlayWares
In this article, several firefights scenes from the game are used to determine how GTX 680, GTX 650 and overclocked i5 3570K CPU can handle the PhysX effects.
[01.10.2012] Borderlands 2 Gameplay Performance and IQ Review by HardOCP
Traditionally, HardOCP directly compares performance of AMD cards (with PhysX set to Low) and NVIDIA GPUs (with PhysX set to High). Tested GPUs include GTX 680 – GTX 660 from NVIDIA side and HD 7970 – HD 7870 from AMD.
[01.10.2012] Borderlands 2 PhysX Performance and PhysX Comparison – GTX 680 and HD 7970 by PC Perspective
Just as the title says, authors of this article are trying to compare PhysX performance of GTX 680 and HD 7970 (actually, a CPU) in integrated benchmark.
[08.10.2012] Borderlands 2 Review by Overclockers.ru
Overclockers.ru has tested a huge set of NVIDIA GPU’s in built-in benchmark, using all three PhysX settings.
[16.10.2012] Dedicated PhyX PPU / GPU Shoot Out by 1percentgaming.com
Small article that includes, among other things, Borderlands 2 benchmarks with varierty of dedicated PhysX GPUs, paired with GTX 690.
[24.10.2012] Borderlands 2 Review by Overclockers.ua
Benchmark in this article was performed used a custom, PhysX intence sequence on Southern Shelf location.
[09.11.2012] 
Test – Bilan de PhysX en 2012 by Comptoir-Hardware
Huge article with set of benchmarks in latest GPU PhysX games, including Borderlands 2.
– We’ll update this post as more articles emerge –