Bonjour,
Ma Femme pour noel ma offer une carte graphique Ati HD 4870X2 2go
Je l'ai branché, Pilote installé etc...

Lorsque que je joue a des jeux (GTA4, Runes Of Magic etc...), au bout d'un certain moment le pc Freeze.
je joue a des jeux soit en plein ecran ou en mode fenetré ce qui me permet en meme temps de surfer sur le net.
J'ai aussi 2 Ecran un HP W2408h (Principale) et un Samsung SyncMaster 226bw 2Ms (Secondaire ou J'etend mon bureau).
Je ne comprends pas D'ou vien le Probleme.
Le vendeur chez qui j'ai acheter le PC a bien regarder ma config avant de me conseiller la HD4870x2 et ma dit qu'il n'y avait pas de souci pour la faire tourner.

Mon ancienne Carte graphique 8800GTX Marcher nikel Bon A par pour GTA4 qui 1 fois sur 10 je devais rebooter car Il est vraiment Gourmand, mais avec le jeux qui sorte je voulais etre au top du top.
Si quelqu'un peut m'aider.

Je join ici mon DXDIAG:

¬ System Information
------------------
Time of this report: 12/27/2008, 02:45:14
Machine name: JIKOX
Operating System: Windows Vista™ Édition Intégrale (6.0, Build 6001) Service Pack 1 (6001.vistasp1_gdr.080917-1612)
Language: French (Regional Setting: French)
System Manufacturer: System manufacturer
System Model: P5K-E
BIOS: BIOS Date: 05/30/07 18:16:31 Ver: 08.00.12
Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 3070MB RAM
Page File: 1407MB used, 4971MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 10
DX Setup Parameters: Not found
DxDiag Version: 6.00.6001.18000 32bit Unicode

¬ DxDiag Notes
------------
Display Tab 1: No problems found.
Display Tab 2: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Sound Tab 3: No problems found.
Input Tab: No problems found.

¬ Display Devices
---------------
Card name: ATI Radeon HD 4870 X2
Manufacturer: ATI Technologies Inc.
Chip type: ATI Radeon Graphics Processor (0x9441)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_9441&SUBSYS_25421002&REV_00
Display Memory: 2298 MB
Dedicated Memory: 1018 MB
Shared Memory: 1279 MB
Current Mode: 1920 x 1200 (32 bit) (60Hz)
Monitor: Moniteur Plug-and-Play générique
Driver Name: atidxx32,atidxx64.dll,atiumdag,atiumdva,atiumd64.dll,atiumd6a.cap,atitmm64.dll
Driver Version: 7.15.0010.0163 (English)
DDI Version: 10.1
Driver Attributes: Final Retail
Driver Date/Size: 12/1/2008 21:35:27, 2340352 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71EE2-D701-11CF-C471-4805A1C2CA35}
Vendor ID: 0x1002
Device ID: 0x9441
SubSys ID: 0x25421002
Revision ID: 0x0000
Revision ID: 0x0000
Video Accel: ModeMPEG2_A ModeMPEG2_C
Deinterlace Caps: {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
{3C5323C1-6FB7-44F5-9081-056BF2EE449D}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{552C0DAD-CCBC-420B-83C8-74943CF9F1A6}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled

Card name: ATI Radeon HD 4870 X2
Manufacturer: ATI Technologies Inc.
Chip type: ATI Radeon Graphics Processor (0x9441)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_9441&SUBSYS_25421002&REV_00
Display Memory: 2298 MB
Dedicated Memory: 1018 MB
Shared Memory: 1279 MB
Current Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor: Moniteur Plug-and-Play générique
Driver Name: atidxx32,atidxx64.dll,atiumdag,atiumdva,atiumd64.dll,atiumd6a.cap,atitmm64.dll
Driver Version: 7.15.0010.0163 (English)
DDI Version: 10.1
Driver Attributes: Final Retail
Driver Date/Size: 12/1/2008 21:35:27, 2340352 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71EE2-D701-11CF-C471-4805A1C2CA35}
Vendor ID: 0x1002
Device ID: 0x9441
SubSys ID: 0x25421002
Revision ID: 0x0000
Revision ID: 0x0000
Video Accel: ModeMPEG2_A ModeMPEG2_C
Deinterlace Caps: {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
{3C5323C1-6FB7-44F5-9081-056BF2EE449D}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{552C0DAD-CCBC-420B-83C8-74943CF9F1A6}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled

Configuration: Windows Vista™ Édition Intégrale 
Internet Explorer 7.0
System Model: P5K-E
Processor: Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 3070MB RAM
DirectX Version: DirectX 10
Card name: ATI Radeon HD 4870 X2
Display Memory: 2298 MB